Na7(WO3)9 crystallizes in the triclinic P1 space group. There are seven inequivalent Na sites. In the first Na site, Na(1) is bonded to one O(1), one O(10), one O(17), one O(2), one O(21), one O(24), one O(25), one O(26), one O(4), one O(5), one O(6), and one O(7) atom to form NaO12 cuboctahedra that share  a cornercorner with one Na(2)O12 cuboctahedra,  a cornercorner with one Na(4)O12 cuboctahedra, corners with two equivalent Na(3)O12 cuboctahedra, corners with two equivalent Na(5)O12 cuboctahedra, corners with two equivalent Na(6)O12 cuboctahedra, corners with two equivalent Na(7)O12 cuboctahedra,  a faceface with one Na(2)O12 cuboctahedra,  a faceface with one Na(3)O12 cuboctahedra,  a faceface with one Na(4)O12 cuboctahedra,  a faceface with one Na(7)O12 cuboctahedra,  a faceface with one W(2)O6 octahedra,  a faceface with one W(5)O6 octahedra,  a faceface with one W(6)O6 octahedra,  a faceface with one W(7)O6 octahedra,  a faceface with one W(8)O6 octahedra,  a faceface with one W(9)O6 octahedra, and faces with two equivalent W(1)O6 octahedra. In the second Na site, Na(2) is bonded to one O(10), one O(12), one O(13), one O(16), one O(17), one O(19), one O(2), one O(22), one O(4), one O(6), one O(8), and one O(9) atom to form NaO12 cuboctahedra that share  a cornercorner with one Na(1)O12 cuboctahedra,  a cornercorner with one Na(3)O12 cuboctahedra,  a cornercorner with one Na(4)O12 cuboctahedra,  a cornercorner with one Na(5)O12 cuboctahedra, corners with two equivalent Na(6)O12 cuboctahedra, corners with two equivalent Na(7)O12 cuboctahedra,  a faceface with one Na(1)O12 cuboctahedra,  a faceface with one Na(3)O12 cuboctahedra,  a faceface with one Na(4)O12 cuboctahedra,  a faceface with one Na(5)O12 cuboctahedra,  a faceface with one Na(6)O12 cuboctahedra,  a faceface with one W(1)O6 octahedra,  a faceface with one W(2)O6 octahedra,  a faceface with one W(3)O6 octahedra,  a faceface with one W(4)O6 octahedra,  a faceface with one W(6)O6 octahedra,  a faceface with one W(9)O6 octahedra, and faces with two equivalent W(5)O6 octahedra. In the third Na site, Na(3) is bonded to one O(12), one O(14), one O(15), one O(17), one O(2), one O(23), one O(25), one O(3), one O(5), one O(6), one O(7), and one O(8) atom to form NaO12 cuboctahedra that share  a cornercorner with one Na(2)O12 cuboctahedra,  a cornercorner with one Na(6)O12 cuboctahedra,  a cornercorner with one Na(7)O12 cuboctahedra, corners with two equivalent Na(1)O12 cuboctahedra, corners with two equivalent Na(4)O12 cuboctahedra, corners with two equivalent Na(5)O12 cuboctahedra,  a faceface with one Na(1)O12 cuboctahedra,  a faceface with one Na(2)O12 cuboctahedra,  a faceface with one Na(6)O12 cuboctahedra,  a faceface with one Na(7)O12 cuboctahedra,  a faceface with one W(1)O6 octahedra,  a faceface with one W(3)O6 octahedra,  a faceface with one W(5)O6 octahedra,  a faceface with one W(6)O6 octahedra,  a faceface with one W(7)O6 octahedra,  a faceface with one W(8)O6 octahedra, and faces with two equivalent W(2)O6 octahedra. In the fourth Na site, Na(4) is bonded to one O(1), one O(12), one O(13), one O(16), one O(18), one O(19), one O(20), one O(21), one O(24), one O(25), one O(26), and one O(9) atom to form NaO12 cuboctahedra that share  a cornercorner with one Na(1)O12 cuboctahedra,  a cornercorner with one Na(2)O12 cuboctahedra,  a cornercorner with one Na(6)O12 cuboctahedra,  a cornercorner with one Na(7)O12 cuboctahedra, corners with two equivalent Na(3)O12 cuboctahedra, corners with two equivalent Na(5)O12 cuboctahedra,  a faceface with one Na(1)O12 cuboctahedra,  a faceface with one Na(2)O12 cuboctahedra,  a faceface with one Na(5)O12 cuboctahedra,  a faceface with one Na(6)O12 cuboctahedra,  a faceface with one Na(7)O12 cuboctahedra,  a faceface with one W(1)O6 octahedra,  a faceface with one W(3)O6 octahedra,  a faceface with one W(4)O6 octahedra,  a faceface with one W(5)O6 octahedra,  a faceface with one W(7)O6 octahedra,  a faceface with one W(8)O6 octahedra, and faces with two equivalent W(9)O6 octahedra. In the fifth Na site, Na(5) is bonded to one O(10), one O(11), one O(15), one O(16), one O(18), one O(19), one O(20), one O(22), one O(23), one O(26), one O(27), and one O(9) atom to form NaO12 cuboctahedra that share  a cornercorner with one Na(2)O12 cuboctahedra,  a cornercorner with one Na(7)O12 cuboctahedra, corners with two equivalent Na(1)O12 cuboctahedra, corners with two equivalent Na(3)O12 cuboctahedra, corners with two equivalent Na(4)O12 cuboctahedra, corners with two equivalent Na(6)O12 cuboctahedra,  a faceface with one Na(2)O12 cuboctahedra,  a faceface with one Na(4)O12 cuboctahedra,  a faceface with one Na(6)O12 cuboctahedra,  a faceface with one Na(7)O12 cuboctahedra,  a faceface with one W(3)O6 octahedra,  a faceface with one W(5)O6 octahedra,  a faceface with one W(6)O6 octahedra,  a faceface with one W(7)O6 octahedra,  a faceface with one W(8)O6 octahedra,  a faceface with one W(9)O6 octahedra, and faces with two equivalent W(4)O6 octahedra. In the sixth Na site, Na(6) is bonded to one O(11), one O(12), one O(13), one O(14), one O(15), one O(17), one O(18), one O(19), one O(22), one O(24), one O(27), and one O(8) atom to form NaO12 cuboctahedra that share  a cornercorner with one Na(3)O12 cuboctahedra,  a cornercorner with one Na(4)O12 cuboctahedra, corners with two equivalent Na(1)O12 cuboctahedra, corners with two equivalent Na(2)O12 cuboctahedra, corners with two equivalent Na(5)O12 cuboctahedra, corners with two equivalent Na(7)O12 cuboctahedra,  a faceface with one Na(2)O12 cuboctahedra,  a faceface with one Na(3)O12 cuboctahedra,  a faceface with one Na(4)O12 cuboctahedra,  a faceface with one Na(5)O12 cuboctahedra,  a faceface with one W(2)O6 octahedra,  a faceface with one W(4)O6 octahedra,  a faceface with one W(5)O6 octahedra,  a faceface with one W(6)O6 octahedra,  a faceface with one W(7)O6 octahedra,  a faceface with one W(9)O6 octahedra, and faces with two equivalent W(3)O6 octahedra. In the seventh Na site, Na(7) is bonded to one O(1), one O(14), one O(20), one O(21), one O(23), one O(26), one O(27), one O(3), one O(4), one O(5), one O(7), and one O(9) atom to form NaO12 cuboctahedra that share  a cornercorner with one Na(3)O12 cuboctahedra,  a cornercorner with one Na(4)O12 cuboctahedra,  a cornercorner with one Na(5)O12 cuboctahedra, corners with two equivalent Na(1)O12 cuboctahedra, corners with two equivalent Na(2)O12 cuboctahedra, corners with two equivalent Na(6)O12 cuboctahedra,  a faceface with one Na(1)O12 cuboctahedra,  a faceface with one Na(3)O12 cuboctahedra,  a faceface with one Na(4)O12 cuboctahedra,  a faceface with one Na(5)O12 cuboctahedra,  a faceface with one W(1)O6 octahedra,  a faceface with one W(2)O6 octahedra,  a faceface with one W(4)O6 octahedra,  a faceface with one W(6)O6 octahedra,  a faceface with one W(7)O6 octahedra,  a faceface with one W(9)O6 octahedra, and faces with two equivalent W(8)O6 octahedra. There are nine inequivalent W sites. In the first W site, W(1) is bonded to one O(1), one O(2), one O(21), one O(25), one O(4), and one O(6) atom to form WO6 octahedra that share  a cornercorner with one W(2)O6 octahedra,  a cornercorner with one W(5)O6 octahedra,  a cornercorner with one W(6)O6 octahedra,  a cornercorner with one W(7)O6 octahedra,  a cornercorner with one W(8)O6 octahedra,  a cornercorner with one W(9)O6 octahedra,  a faceface with one Na(2)O12 cuboctahedra,  a faceface with one Na(3)O12 cuboctahedra,  a faceface with one Na(4)O12 cuboctahedra,  a faceface with one Na(7)O12 cuboctahedra, and faces with two equivalent Na(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 2°. In the second W site, W(2) is bonded to one O(14), one O(17), one O(2), one O(3), one O(5), and one O(8) atom to form WO6 octahedra that share  a cornercorner with one W(1)O6 octahedra,  a cornercorner with one W(3)O6 octahedra,  a cornercorner with one W(5)O6 octahedra,  a cornercorner with one W(6)O6 octahedra,  a cornercorner with one W(7)O6 octahedra,  a cornercorner with one W(8)O6 octahedra,  a faceface with one Na(1)O12 cuboctahedra,  a faceface with one Na(2)O12 cuboctahedra,  a faceface with one Na(6)O12 cuboctahedra,  a faceface with one Na(7)O12 cuboctahedra, and faces with two equivalent Na(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-3°. In the third W site, W(3) is bonded to one O(11), one O(12), one O(13), one O(15), one O(18), and one O(8) atom to form WO6 octahedra that share  a cornercorner with one W(2)O6 octahedra,  a cornercorner with one W(4)O6 octahedra,  a cornercorner with one W(5)O6 octahedra,  a cornercorner with one W(6)O6 octahedra,  a cornercorner with one W(7)O6 octahedra,  a cornercorner with one W(9)O6 octahedra,  a faceface with one Na(2)O12 cuboctahedra,  a faceface with one Na(3)O12 cuboctahedra,  a faceface with one Na(4)O12 cuboctahedra,  a faceface with one Na(5)O12 cuboctahedra, and faces with two equivalent Na(6)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-3°. In the fourth W site, W(4) is bonded to one O(11), one O(16), one O(20), one O(22), one O(27), and one O(9) atom to form WO6 octahedra that share  a cornercorner with one W(3)O6 octahedra,  a cornercorner with one W(5)O6 octahedra,  a cornercorner with one W(6)O6 octahedra,  a cornercorner with one W(7)O6 octahedra,  a cornercorner with one W(8)O6 octahedra,  a cornercorner with one W(9)O6 octahedra,  a faceface with one Na(2)O12 cuboctahedra,  a faceface with one Na(4)O12 cuboctahedra,  a faceface with one Na(6)O12 cuboctahedra,  a faceface with one Na(7)O12 cuboctahedra, and faces with two equivalent Na(5)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-2°. In the fifth W site, W(5) is bonded to one O(10), one O(12), one O(16), one O(17), one O(19), and one O(6) atom to form WO6 octahedra that share  a cornercorner with one W(1)O6 octahedra,  a cornercorner with one W(2)O6 octahedra,  a cornercorner with one W(3)O6 octahedra,  a cornercorner with one W(4)O6 octahedra,  a cornercorner with one W(6)O6 octahedra,  a cornercorner with one W(9)O6 octahedra,  a faceface with one Na(1)O12 cuboctahedra,  a faceface with one Na(3)O12 cuboctahedra,  a faceface with one Na(4)O12 cuboctahedra,  a faceface with one Na(5)O12 cuboctahedra,  a faceface with one Na(6)O12 cuboctahedra, and faces with two equivalent Na(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-2°. In the sixth W site, W(6) is bonded to one O(10), one O(14), one O(15), one O(22), one O(4), and one O(7) atom to form WO6 octahedra that share  a cornercorner with one W(1)O6 octahedra,  a cornercorner with one W(2)O6 octahedra,  a cornercorner with one W(3)O6 octahedra,  a cornercorner with one W(4)O6 octahedra,  a cornercorner with one W(5)O6 octahedra,  a cornercorner with one W(8)O6 octahedra,  a faceface with one Na(1)O12 cuboctahedra,  a faceface with one Na(2)O12 cuboctahedra,  a faceface with one Na(3)O12 cuboctahedra,  a faceface with one Na(5)O12 cuboctahedra,  a faceface with one Na(6)O12 cuboctahedra, and  a faceface with one Na(7)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 2°. In the seventh W site, W(7) is bonded to one O(18), one O(23), one O(24), one O(25), one O(27), and one O(5) atom to form WO6 octahedra that share  a cornercorner with one W(1)O6 octahedra,  a cornercorner with one W(2)O6 octahedra,  a cornercorner with one W(3)O6 octahedra,  a cornercorner with one W(4)O6 octahedra,  a cornercorner with one W(8)O6 octahedra,  a cornercorner with one W(9)O6 octahedra,  a faceface with one Na(1)O12 cuboctahedra,  a faceface with one Na(3)O12 cuboctahedra,  a faceface with one Na(4)O12 cuboctahedra,  a faceface with one Na(5)O12 cuboctahedra,  a faceface with one Na(6)O12 cuboctahedra, and  a faceface with one Na(7)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 2°. In the eighth W site, W(8) is bonded to one O(1), one O(20), one O(23), one O(26), one O(3), and one O(7) atom to form WO6 octahedra that share  a cornercorner with one W(1)O6 octahedra,  a cornercorner with one W(2)O6 octahedra,  a cornercorner with one W(4)O6 octahedra,  a cornercorner with one W(6)O6 octahedra,  a cornercorner with one W(7)O6 octahedra,  a cornercorner with one W(9)O6 octahedra,  a faceface with one Na(1)O12 cuboctahedra,  a faceface with one Na(3)O12 cuboctahedra,  a faceface with one Na(4)O12 cuboctahedra,  a faceface with one Na(5)O12 cuboctahedra, and faces with two equivalent Na(7)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-2°. In the ninth W site, W(9) is bonded to one O(13), one O(19), one O(21), one O(24), one O(26), and one O(9) atom to form WO6 octahedra that share  a cornercorner with one W(1)O6 octahedra,  a cornercorner with one W(3)O6 octahedra,  a cornercorner with one W(4)O6 octahedra,  a cornercorner with one W(5)O6 octahedra,  a cornercorner with one W(7)O6 octahedra,  a cornercorner with one W(8)O6 octahedra,  a faceface with one Na(1)O12 cuboctahedra,  a faceface with one Na(2)O12 cuboctahedra,  a faceface with one Na(5)O12 cuboctahedra,  a faceface with one Na(6)O12 cuboctahedra,  a faceface with one Na(7)O12 cuboctahedra, and faces with two equivalent Na(4)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-2°. There are twenty-seven inequivalent O sites. In the first O site, O(1) is bonded to one Na(1), one Na(4), one Na(7), one W(1), and one W(8) atom to form distorted ONa3W2 square pyramids that share  a cornercorner with one O(12)Na4W2 octahedra,  a cornercorner with one O(17)Na4W2 octahedra,  a cornercorner with one O(19)Na4W2 octahedra,  a cornercorner with one O(26)Na4W2 octahedra,  a cornercorner with one O(10)Na3W2 square pyramid,  a cornercorner with one O(13)Na3W2 square pyramid,  a cornercorner with one O(14)Na3W2 square pyramid,  a cornercorner with one O(16)Na3W2 square pyramid,  a cornercorner with one O(18)Na3W2 square pyramid,  a cornercorner with one O(21)Na3W2 square pyramid,  a cornercorner with one O(27)Na3W2 square pyramid,  a cornercorner with one O(4)Na3W2 square pyramid,  a cornercorner with one O(7)Na3W2 square pyramid, corners with two equivalent O(2)Na3W2 square pyramids, corners with two equivalent O(23)Na3W2 square pyramids, corners with two equivalent O(5)Na3W2 square pyramids,  an edgeedge with one O(9)Na4W2 octahedra,  an edgeedge with one O(24)Na3W2 square pyramid,  an edgeedge with one O(4)Na3W2 square pyramid,  an edgeedge with one O(6)Na3W2 square pyramid,  an edgeedge with one O(7)Na3W2 square pyramid,  a faceface with one O(26)Na4W2 octahedra,  a faceface with one O(20)Na3W2 square pyramid,  a faceface with one O(21)Na3W2 square pyramid, and  a faceface with one O(25)Na3W2 square pyramid. The corner-sharing octahedral tilt angles range from 2-61°. In the second O site, O(2) is bonded to one Na(1), one Na(2), one Na(3), one W(1), and one W(2) atom to form distorted ONa3W2 square pyramids that share  a cornercorner with one O(17)Na4W2 octahedra,  a cornercorner with one O(19)Na4W2 octahedra,  a cornercorner with one O(26)Na4W2 octahedra,  a cornercorner with one O(9)Na4W2 octahedra,  a cornercorner with one O(13)Na3W2 square pyramid,  a cornercorner with one O(15)Na3W2 square pyramid,  a cornercorner with one O(16)Na3W2 square pyramid,  a cornercorner with one O(22)Na3W2 square pyramid,  a cornercorner with one O(23)Na3W2 square pyramid,  a cornercorner with one O(24)Na3W2 square pyramid,  a cornercorner with one O(25)Na3W2 square pyramid,  a cornercorner with one O(5)Na3W2 square pyramid,  a cornercorner with one O(6)Na3W2 square pyramid, corners with two equivalent O(1)Na3W2 square pyramids, corners with two equivalent O(14)Na3W2 square pyramids, corners with two equivalent O(7)Na3W2 square pyramids,  an edgeedge with one O(12)Na4W2 octahedra,  an edgeedge with one O(10)Na3W2 square pyramid,  an edgeedge with one O(21)Na3W2 square pyramid,  an edgeedge with one O(25)Na3W2 square pyramid,  an edgeedge with one O(5)Na3W2 square pyramid,  a faceface with one O(17)Na4W2 octahedra,  a faceface with one O(4)Na3W2 square pyramid,  a faceface with one O(6)Na3W2 square pyramid, and  a faceface with one O(8)Na3W2 square pyramid. The corner-sharing octahedral tilt angles range from 1-61°. In the third O site, O(3) is bonded in a distorted rectangular see-saw-like geometry to one Na(3), one Na(7), one W(2), and one W(8) atom. In the fourth O site, O(4) is bonded to one Na(1), one Na(2), one Na(7), one W(1), and one W(6) atom to form distorted ONa3W2 square pyramids that share  a cornercorner with one O(12)Na4W2 octahedra,  a cornercorner with one O(19)Na4W2 octahedra, corners with two equivalent O(9)Na4W2 octahedra,  a cornercorner with one O(1)Na3W2 square pyramid,  a cornercorner with one O(13)Na3W2 square pyramid,  a cornercorner with one O(15)Na3W2 square pyramid,  a cornercorner with one O(16)Na3W2 square pyramid,  a cornercorner with one O(20)Na3W2 square pyramid,  a cornercorner with one O(23)Na3W2 square pyramid,  a cornercorner with one O(24)Na3W2 square pyramid,  a cornercorner with one O(27)Na3W2 square pyramid,  a cornercorner with one O(6)Na3W2 square pyramid,  a cornercorner with one O(8)Na3W2 square pyramid, corners with two equivalent O(25)Na3W2 square pyramids, corners with two equivalent O(5)Na3W2 square pyramids,  an edgeedge with one O(17)Na4W2 octahedra,  an edgeedge with one O(26)Na4W2 octahedra,  an edgeedge with one O(1)Na3W2 square pyramid,  an edgeedge with one O(14)Na3W2 square pyramid,  an edgeedge with one O(22)Na3W2 square pyramid,  an edgeedge with one O(6)Na3W2 square pyramid,  a faceface with one O(10)Na3W2 square pyramid,  a faceface with one O(2)Na3W2 square pyramid,  a faceface with one O(21)Na3W2 square pyramid, and  a faceface with one O(7)Na3W2 square pyramid. The corner-sharing octahedral tilt angles range from 59-61°. In the fifth O site, O(5) is bonded to one Na(1), one Na(3), one Na(7), one W(2), and one W(7) atom to form distorted ONa3W2 square pyramids that share  a cornercorner with one O(12)Na4W2 octahedra,  a cornercorner with one O(9)Na4W2 octahedra, corners with two equivalent O(26)Na4W2 octahedra,  a cornercorner with one O(10)Na3W2 square pyramid,  a cornercorner with one O(15)Na3W2 square pyramid,  a cornercorner with one O(18)Na3W2 square pyramid,  a cornercorner with one O(2)Na3W2 square pyramid,  a cornercorner with one O(20)Na3W2 square pyramid,  a cornercorner with one O(7)Na3W2 square pyramid, corners with two equivalent O(1)Na3W2 square pyramids, corners with two equivalent O(21)Na3W2 square pyramids, corners with two equivalent O(4)Na3W2 square pyramids, corners with two equivalent O(8)Na3W2 square pyramids,  an edgeedge with one O(2)Na3W2 square pyramid,  an edgeedge with one O(24)Na3W2 square pyramid,  an edgeedge with one O(27)Na3W2 square pyramid,  an edgeedge with one O(6)Na3W2 square pyramid,  an edgeedge with one O(7)Na3W2 square pyramid,  a faceface with one O(17)Na4W2 octahedra,  a faceface with one O(14)Na3W2 square pyramid,  a faceface with one O(23)Na3W2 square pyramid, and  a faceface with one O(25)Na3W2 square pyramid. The corner-sharing octahedral tilt angles range from 59-62°. In the sixth O site, O(6) is bonded to one Na(1), one Na(2), one Na(3), one W(1), and one W(5) atom to form distorted ONa3W2 square pyramids that share  a cornercorner with one O(17)Na4W2 octahedra,  a cornercorner with one O(26)Na4W2 octahedra,  a cornercorner with one O(9)Na4W2 octahedra, corners with two equivalent O(19)Na4W2 octahedra,  a cornercorner with one O(10)Na3W2 square pyramid,  a cornercorner with one O(13)Na3W2 square pyramid,  a cornercorner with one O(14)Na3W2 square pyramid,  a cornercorner with one O(15)Na3W2 square pyramid,  a cornercorner with one O(2)Na3W2 square pyramid,  a cornercorner with one O(22)Na3W2 square pyramid,  a cornercorner with one O(23)Na3W2 square pyramid,  a cornercorner with one O(24)Na3W2 square pyramid,  a cornercorner with one O(4)Na3W2 square pyramid, corners with two equivalent O(21)Na3W2 square pyramids, corners with two equivalent O(7)Na3W2 square pyramids,  an edgeedge with one O(1)Na3W2 square pyramid,  an edgeedge with one O(10)Na3W2 square pyramid,  an edgeedge with one O(16)Na3W2 square pyramid,  an edgeedge with one O(4)Na3W2 square pyramid,  an edgeedge with one O(5)Na3W2 square pyramid,  an edgeedge with one O(8)Na3W2 square pyramid,  a faceface with one O(12)Na4W2 octahedra,  a faceface with one O(17)Na4W2 octahedra,  a faceface with one O(2)Na3W2 square pyramid, and  a faceface with one O(25)Na3W2 square pyramid. The corner-sharing octahedral tilt angles range from 2-60°. In the seventh O site, O(7) is bonded to one Na(1), one Na(3), one Na(7), one W(6), and one W(8) atom to form distorted ONa3W2 square pyramids that share  a cornercorner with one O(12)Na4W2 octahedra,  a cornercorner with one O(9)Na4W2 octahedra, corners with two equivalent O(17)Na4W2 octahedra,  a cornercorner with one O(1)Na3W2 square pyramid,  a cornercorner with one O(22)Na3W2 square pyramid,  a cornercorner with one O(24)Na3W2 square pyramid,  a cornercorner with one O(27)Na3W2 square pyramid,  a cornercorner with one O(5)Na3W2 square pyramid,  a cornercorner with one O(8)Na3W2 square pyramid, corners with two equivalent O(2)Na3W2 square pyramids, corners with two equivalent O(20)Na3W2 square pyramids, corners with two equivalent O(25)Na3W2 square pyramids, corners with two equivalent O(6)Na3W2 square pyramids,  an edgeedge with one O(1)Na3W2 square pyramid,  an edgeedge with one O(10)Na3W2 square pyramid,  an edgeedge with one O(15)Na3W2 square pyramid,  an edgeedge with one O(21)Na3W2 square pyramid,  an edgeedge with one O(5)Na3W2 square pyramid,  a faceface with one O(26)Na4W2 octahedra,  a faceface with one O(14)Na3W2 square pyramid,  a faceface with one O(23)Na3W2 square pyramid, and  a faceface with one O(4)Na3W2 square pyramid. The corner-sharing octahedral tilt angles range from 60-61°. In the eighth O site, O(8) is bonded to one Na(2), one Na(3), one Na(6), one W(2), and one W(3) atom to form distorted ONa3W2 square pyramids that share  a cornercorner with one O(12)Na4W2 octahedra,  a cornercorner with one O(17)Na4W2 octahedra,  a cornercorner with one O(9)Na4W2 octahedra,  a cornercorner with one O(10)Na3W2 square pyramid,  a cornercorner with one O(14)Na3W2 square pyramid,  a cornercorner with one O(15)Na3W2 square pyramid,  a cornercorner with one O(16)Na3W2 square pyramid,  a cornercorner with one O(23)Na3W2 square pyramid,  a cornercorner with one O(24)Na3W2 square pyramid,  a cornercorner with one O(25)Na3W2 square pyramid,  a cornercorner with one O(27)Na3W2 square pyramid,  a cornercorner with one O(4)Na3W2 square pyramid,  a cornercorner with one O(7)Na3W2 square pyramid, corners with two equivalent O(18)Na3W2 square pyramids, corners with two equivalent O(22)Na3W2 square pyramids, corners with two equivalent O(5)Na3W2 square pyramids,  an edgeedge with one O(19)Na4W2 octahedra,  an edgeedge with one O(14)Na3W2 square pyramid,  an edgeedge with one O(15)Na3W2 square pyramid,  an edgeedge with one O(6)Na3W2 square pyramid,  a faceface with one O(12)Na4W2 octahedra,  a faceface with one O(17)Na4W2 octahedra,  a faceface with one O(13)Na3W2 square pyramid, and  a faceface with one O(2)Na3W2 square pyramid. The corner-sharing octahedral tilt angles are 61°. In the ninth O site, O(9) is bonded to one Na(2), one Na(4), one Na(5), one Na(7), one W(4), and one W(9) atom to form distorted ONa4W2 octahedra that share  a cornercorner with one O(17)Na4W2 octahedra,  a cornercorner with one O(19)Na4W2 octahedra,  a cornercorner with one O(26)Na4W2 octahedra,  a cornercorner with one O(14)Na3W2 square pyramid,  a cornercorner with one O(15)Na3W2 square pyramid,  a cornercorner with one O(16)Na3W2 square pyramid,  a cornercorner with one O(2)Na3W2 square pyramid,  a cornercorner with one O(20)Na3W2 square pyramid,  a cornercorner with one O(25)Na3W2 square pyramid,  a cornercorner with one O(5)Na3W2 square pyramid,  a cornercorner with one O(6)Na3W2 square pyramid,  a cornercorner with one O(7)Na3W2 square pyramid,  a cornercorner with one O(8)Na3W2 square pyramid, corners with two equivalent O(18)Na3W2 square pyramids, corners with two equivalent O(24)Na3W2 square pyramids, corners with two equivalent O(4)Na3W2 square pyramids,  an edgeedge with one O(12)Na4W2 octahedra,  an edgeedge with one O(1)Na3W2 square pyramid,  an edgeedge with one O(10)Na3W2 square pyramid,  an edgeedge with one O(23)Na3W2 square pyramid,  a faceface with one O(19)Na4W2 octahedra,  a faceface with one O(26)Na4W2 octahedra,  a faceface with one O(13)Na3W2 square pyramid,  a faceface with one O(16)Na3W2 square pyramid,  a faceface with one O(20)Na3W2 square pyramid,  a faceface with one O(21)Na3W2 square pyramid,  a faceface with one O(22)Na3W2 square pyramid, and  a faceface with one O(27)Na3W2 square pyramid. The corner-sharing octahedral tilt angles range from 60-61°. In the tenth O site, O(10) is bonded to one Na(1), one Na(2), one Na(5), one W(5), and one W(6) atom to form distorted ONa3W2 square pyramids that share corners with two equivalent O(12)Na4W2 octahedra, corners with two equivalent O(26)Na4W2 octahedra,  a cornercorner with one O(1)Na3W2 square pyramid,  a cornercorner with one O(13)Na3W2 square pyramid,  a cornercorner with one O(14)Na3W2 square pyramid,  a cornercorner with one O(16)Na3W2 square pyramid,  a cornercorner with one O(18)Na3W2 square pyramid,  a cornercorner with one O(20)Na3W2 square pyramid,  a cornercorner with one O(21)Na3W2 square pyramid,  a cornercorner with one O(23)Na3W2 square pyramid,  a cornercorner with one O(24)Na3W2 square pyramid,  a cornercorner with one O(25)Na3W2 square pyramid,  a cornercorner with one O(27)Na3W2 square pyramid,  a cornercorner with one O(5)Na3W2 square pyramid,  a cornercorner with one O(6)Na3W2 square pyramid,  a cornercorner with one O(8)Na3W2 square pyramid,  an edgeedge with one O(9)Na4W2 octahedra,  an edgeedge with one O(15)Na3W2 square pyramid,  an edgeedge with one O(16)Na3W2 square pyramid,  an edgeedge with one O(2)Na3W2 square pyramid,  an edgeedge with one O(6)Na3W2 square pyramid,  an edgeedge with one O(7)Na3W2 square pyramid,  a faceface with one O(17)Na4W2 octahedra,  a faceface with one O(19)Na4W2 octahedra,  a faceface with one O(22)Na3W2 square pyramid, and  a faceface with one O(4)Na3W2 square pyramid. The corner-sharing octahedral tilt angles range from 1-61°. In the eleventh O site, O(11) is bonded in a distorted square co-planar geometry to one Na(5), one Na(6), one W(3), and one W(4) atom. In the twelfth O site, O(12) is bonded to one Na(2), one Na(3), one Na(4), one Na(6), one W(3), and one W(5) atom to form distorted ONa4W2 octahedra that share  a cornercorner with one O(17)Na4W2 octahedra,  a cornercorner with one O(19)Na4W2 octahedra,  a cornercorner with one O(26)Na4W2 octahedra,  a cornercorner with one O(1)Na3W2 square pyramid,  a cornercorner with one O(13)Na3W2 square pyramid,  a cornercorner with one O(20)Na3W2 square pyramid,  a cornercorner with one O(21)Na3W2 square pyramid,  a cornercorner with one O(23)Na3W2 square pyramid,  a cornercorner with one O(27)Na3W2 square pyramid,  a cornercorner with one O(4)Na3W2 square pyramid,  a cornercorner with one O(5)Na3W2 square pyramid,  a cornercorner with one O(7)Na3W2 square pyramid,  a cornercorner with one O(8)Na3W2 square pyramid, corners with two equivalent O(10)Na3W2 square pyramids, corners with two equivalent O(22)Na3W2 square pyramids, corners with two equivalent O(25)Na3W2 square pyramids,  an edgeedge with one O(9)Na4W2 octahedra,  an edgeedge with one O(14)Na3W2 square pyramid,  an edgeedge with one O(2)Na3W2 square pyramid,  an edgeedge with one O(24)Na3W2 square pyramid,  a faceface with one O(17)Na4W2 octahedra,  a faceface with one O(19)Na4W2 octahedra,  a faceface with one O(13)Na3W2 square pyramid,  a faceface with one O(15)Na3W2 square pyramid,  a faceface with one O(16)Na3W2 square pyramid,  a faceface with one O(18)Na3W2 square pyramid,  a faceface with one O(6)Na3W2 square pyramid, and  a faceface with one O(8)Na3W2 square pyramid. The corner-sharing octahedral tilt angles are 61°. In the thirteenth O site, O(13) is bonded to one Na(2), one Na(4), one Na(6), one W(3), and one W(9) atom to form distorted ONa3W2 square pyramids that share  a cornercorner with one O(12)Na4W2 octahedra,  a cornercorner with one O(19)Na4W2 octahedra, corners with two equivalent O(26)Na4W2 octahedra,  a cornercorner with one O(1)Na3W2 square pyramid,  a cornercorner with one O(10)Na3W2 square pyramid,  a cornercorner with one O(14)Na3W2 square pyramid,  a cornercorner with one O(18)Na3W2 square pyramid,  a cornercorner with one O(2)Na3W2 square pyramid,  a cornercorner with one O(20)Na3W2 square pyramid,  a cornercorner with one O(24)Na3W2 square pyramid,  a cornercorner with one O(25)Na3W2 square pyramid,  a cornercorner with one O(27)Na3W2 square pyramid,  a cornercorner with one O(4)Na3W2 square pyramid,  a cornercorner with one O(6)Na3W2 square pyramid, corners with two equivalent O(15)Na3W2 square pyramids, corners with two equivalent O(22)Na3W2 square pyramids,  an edgeedge with one O(17)Na4W2 octahedra,  an edgeedge with one O(16)Na3W2 square pyramid,  an edgeedge with one O(18)Na3W2 square pyramid,  an edgeedge with one O(21)Na3W2 square pyramid,  an edgeedge with one O(24)Na3W2 square pyramid,  a faceface with one O(12)Na4W2 octahedra,  a faceface with one O(19)Na4W2 octahedra,  a faceface with one O(9)Na4W2 octahedra, and  a faceface with one O(8)Na3W2 square pyramid. The corner-sharing octahedral tilt angles range from 1-61°. In the fourteenth O site, O(14) is bonded to one Na(3), one Na(6), one Na(7), one W(2), and one W(6) atom to form distorted ONa3W2 square pyramids that share  a cornercorner with one O(19)Na4W2 octahedra,  a cornercorner with one O(26)Na4W2 octahedra,  a cornercorner with one O(9)Na4W2 octahedra,  a cornercorner with one O(1)Na3W2 square pyramid,  a cornercorner with one O(10)Na3W2 square pyramid,  a cornercorner with one O(13)Na3W2 square pyramid,  a cornercorner with one O(18)Na3W2 square pyramid,  a cornercorner with one O(20)Na3W2 square pyramid,  a cornercorner with one O(21)Na3W2 square pyramid,  a cornercorner with one O(24)Na3W2 square pyramid,  a cornercorner with one O(25)Na3W2 square pyramid,  a cornercorner with one O(6)Na3W2 square pyramid,  a cornercorner with one O(8)Na3W2 square pyramid, corners with two equivalent O(2)Na3W2 square pyramids, corners with two equivalent O(27)Na3W2 square pyramids,  an edgeedge with one O(12)Na4W2 octahedra,  an edgeedge with one O(22)Na3W2 square pyramid,  an edgeedge with one O(23)Na3W2 square pyramid,  an edgeedge with one O(4)Na3W2 square pyramid,  an edgeedge with one O(8)Na3W2 square pyramid,  a faceface with one O(17)Na4W2 octahedra,  a faceface with one O(15)Na3W2 square pyramid,  a faceface with one O(5)Na3W2 square pyramid, and  a faceface with one O(7)Na3W2 square pyramid. The corner-sharing octahedral tilt angles range from 2-61°. In the fifteenth O site, O(15) is bonded to one Na(3), one Na(5), one Na(6), one W(3), and one W(6) atom to form distorted ONa3W2 square pyramids that share  a cornercorner with one O(26)Na4W2 octahedra,  a cornercorner with one O(9)Na4W2 octahedra, corners with two equivalent O(19)Na4W2 octahedra,  a cornercorner with one O(16)Na3W2 square pyramid,  a cornercorner with one O(2)Na3W2 square pyramid,  a cornercorner with one O(20)Na3W2 square pyramid,  a cornercorner with one O(24)Na3W2 square pyramid,  a cornercorner with one O(25)Na3W2 square pyramid,  a cornercorner with one O(4)Na3W2 square pyramid,  a cornercorner with one O(5)Na3W2 square pyramid,  a cornercorner with one O(6)Na3W2 square pyramid,  a cornercorner with one O(8)Na3W2 square pyramid, corners with two equivalent O(13)Na3W2 square pyramids, corners with two equivalent O(23)Na3W2 square pyramids,  an edgeedge with one O(17)Na4W2 octahedra,  an edgeedge with one O(10)Na3W2 square pyramid,  an edgeedge with one O(27)Na3W2 square pyramid,  an edgeedge with one O(7)Na3W2 square pyramid,  an edgeedge with one O(8)Na3W2 square pyramid,  a faceface with one O(12)Na4W2 octahedra,  a faceface with one O(14)Na3W2 square pyramid,  a faceface with one O(18)Na3W2 square pyramid, and  a faceface with one O(22)Na3W2 square pyramid. The corner-sharing octahedral tilt angles range from 1-61°. In the sixteenth O site, O(16) is bonded to one Na(2), one Na(4), one Na(5), one W(4), and one W(5) atom to form distorted ONa3W2 square pyramids that share  a cornercorner with one O(19)Na4W2 octahedra,  a cornercorner with one O(9)Na4W2 octahedra, corners with two equivalent O(17)Na4W2 octahedra,  a cornercorner with one O(1)Na3W2 square pyramid,  a cornercorner with one O(10)Na3W2 square pyramid,  a cornercorner with one O(15)Na3W2 square pyramid,  a cornercorner with one O(2)Na3W2 square pyramid,  a cornercorner with one O(21)Na3W2 square pyramid,  a cornercorner with one O(22)Na3W2 square pyramid,  a cornercorner with one O(23)Na3W2 square pyramid,  a cornercorner with one O(24)Na3W2 square pyramid,  a cornercorner with one O(25)Na3W2 square pyramid,  a cornercorner with one O(4)Na3W2 square pyramid,  a cornercorner with one O(8)Na3W2 square pyramid, corners with two equivalent O(18)Na3W2 square pyramids, corners with two equivalent O(27)Na3W2 square pyramids,  an edgeedge with one O(26)Na4W2 octahedra,  an edgeedge with one O(10)Na3W2 square pyramid,  an edgeedge with one O(13)Na3W2 square pyramid,  an edgeedge with one O(22)Na3W2 square pyramid,  an edgeedge with one O(6)Na3W2 square pyramid,  a faceface with one O(12)Na4W2 octahedra,  a faceface with one O(19)Na4W2 octahedra,  a faceface with one O(9)Na4W2 octahedra, and  a faceface with one O(20)Na3W2 square pyramid. The corner-sharing octahedral tilt angles range from 1-61°. In the seventeenth O site, O(17) is bonded to one Na(1), one Na(2), one Na(3), one Na(6), one W(2), and one W(5) atom to form distorted ONa4W2 octahedra that share  a cornercorner with one O(12)Na4W2 octahedra,  a cornercorner with one O(26)Na4W2 octahedra,  a cornercorner with one O(9)Na4W2 octahedra,  a cornercorner with one O(1)Na3W2 square pyramid,  a cornercorner with one O(18)Na3W2 square pyramid,  a cornercorner with one O(2)Na3W2 square pyramid,  a cornercorner with one O(21)Na3W2 square pyramid,  a cornercorner with one O(23)Na3W2 square pyramid,  a cornercorner with one O(27)Na3W2 square pyramid,  a cornercorner with one O(6)Na3W2 square pyramid,  a cornercorner with one O(8)Na3W2 square pyramid, corners with two equivalent O(16)Na3W2 square pyramids, corners with two equivalent O(22)Na3W2 square pyramids, corners with two equivalent O(24)Na3W2 square pyramids, corners with two equivalent O(7)Na3W2 square pyramids,  an edgeedge with one O(13)Na3W2 square pyramid,  an edgeedge with one O(15)Na3W2 square pyramid,  an edgeedge with one O(25)Na3W2 square pyramid,  an edgeedge with one O(4)Na3W2 square pyramid,  a faceface with one O(12)Na4W2 octahedra,  a faceface with one O(19)Na4W2 octahedra,  a faceface with one O(10)Na3W2 square pyramid,  a faceface with one O(14)Na3W2 square pyramid,  a faceface with one O(2)Na3W2 square pyramid,  a faceface with one O(5)Na3W2 square pyramid,  a faceface with one O(6)Na3W2 square pyramid, and  a faceface with one O(8)Na3W2 square pyramid. The corner-sharing octahedral tilt angles range from 0-61°. In the eighteenth O site, O(18) is bonded to one Na(4), one Na(5), one Na(6), one W(3), and one W(7) atom to form distorted ONa3W2 square pyramids that share  a cornercorner with one O(17)Na4W2 octahedra,  a cornercorner with one O(19)Na4W2 octahedra, corners with two equivalent O(26)Na4W2 octahedra, corners with two equivalent O(9)Na4W2 octahedra,  a cornercorner with one O(1)Na3W2 square pyramid,  a cornercorner with one O(10)Na3W2 square pyramid,  a cornercorner with one O(13)Na3W2 square pyramid,  a cornercorner with one O(14)Na3W2 square pyramid,  a cornercorner with one O(21)Na3W2 square pyramid,  a cornercorner with one O(5)Na3W2 square pyramid, corners with two equivalent O(16)Na3W2 square pyramids, corners with two equivalent O(20)Na3W2 square pyramids, corners with two equivalent O(8)Na3W2 square pyramids,  an edgeedge with one O(19)Na4W2 octahedra,  an edgeedge with one O(13)Na3W2 square pyramid,  an edgeedge with one O(22)Na3W2 square pyramid,  an edgeedge with one O(23)Na3W2 square pyramid,  an edgeedge with one O(25)Na3W2 square pyramid,  a faceface with one O(12)Na4W2 octahedra,  a faceface with one O(15)Na3W2 square pyramid,  a faceface with one O(24)Na3W2 square pyramid, and  a faceface with one O(27)Na3W2 square pyramid. The corner-sharing octahedral tilt angles range from 1-61°. In the nineteenth O site, O(19) is bonded to one Na(2), one Na(4), one Na(5), one Na(6), one W(5), and one W(9) atom to form distorted ONa4W2 octahedra that share  a cornercorner with one O(12)Na4W2 octahedra,  a cornercorner with one O(9)Na4W2 octahedra,  a cornercorner with one O(1)Na3W2 square pyramid,  a cornercorner with one O(13)Na3W2 square pyramid,  a cornercorner with one O(14)Na3W2 square pyramid,  a cornercorner with one O(16)Na3W2 square pyramid,  a cornercorner with one O(18)Na3W2 square pyramid,  a cornercorner with one O(2)Na3W2 square pyramid,  a cornercorner with one O(22)Na3W2 square pyramid,  a cornercorner with one O(23)Na3W2 square pyramid,  a cornercorner with one O(25)Na3W2 square pyramid,  a cornercorner with one O(4)Na3W2 square pyramid, corners with two equivalent O(15)Na3W2 square pyramids, corners with two equivalent O(21)Na3W2 square pyramids, corners with two equivalent O(27)Na3W2 square pyramids, corners with two equivalent O(6)Na3W2 square pyramids,  an edgeedge with one O(18)Na3W2 square pyramid,  an edgeedge with one O(20)Na3W2 square pyramid,  an edgeedge with one O(22)Na3W2 square pyramid,  an edgeedge with one O(8)Na3W2 square pyramid,  a faceface with one O(12)Na4W2 octahedra,  a faceface with one O(17)Na4W2 octahedra,  a faceface with one O(26)Na4W2 octahedra,  a faceface with one O(9)Na4W2 octahedra,  a faceface with one O(10)Na3W2 square pyramid,  a faceface with one O(13)Na3W2 square pyramid,  a faceface with one O(16)Na3W2 square pyramid, and  a faceface with one O(24)Na3W2 square pyramid. The corner-sharing octahedral tilt angles are 61°. In the twentieth O site, O(20) is bonded to one Na(4), one Na(5), one Na(7), one W(4), and one W(8) atom to form distorted ONa3W2 square pyramids that share  a cornercorner with one O(12)Na4W2 octahedra,  a cornercorner with one O(26)Na4W2 octahedra,  a cornercorner with one O(9)Na4W2 octahedra,  a cornercorner with one O(10)Na3W2 square pyramid,  a cornercorner with one O(13)Na3W2 square pyramid,  a cornercorner with one O(14)Na3W2 square pyramid,  a cornercorner with one O(15)Na3W2 square pyramid,  a cornercorner with one O(23)Na3W2 square pyramid,  a cornercorner with one O(24)Na3W2 square pyramid,  a cornercorner with one O(25)Na3W2 square pyramid,  a cornercorner with one O(27)Na3W2 square pyramid,  a cornercorner with one O(4)Na3W2 square pyramid,  a cornercorner with one O(5)Na3W2 square pyramid, corners with two equivalent O(18)Na3W2 square pyramids, corners with two equivalent O(22)Na3W2 square pyramids, corners with two equivalent O(7)Na3W2 square pyramids,  an edgeedge with one O(19)Na4W2 octahedra,  an edgeedge with one O(21)Na3W2 square pyramid,  an edgeedge with one O(23)Na3W2 square pyramid,  an edgeedge with one O(27)Na3W2 square pyramid,  a faceface with one O(26)Na4W2 octahedra,  a faceface with one O(9)Na4W2 octahedra,  a faceface with one O(1)Na3W2 square pyramid, and  a faceface with one O(16)Na3W2 square pyramid. The corner-sharing octahedral tilt angles range from 60-61°. In the twenty-first O site, O(21) is bonded to one Na(1), one Na(4), one Na(7), one W(1), and one W(9) atom to form distorted ONa3W2 square pyramids that share  a cornercorner with one O(12)Na4W2 octahedra,  a cornercorner with one O(17)Na4W2 octahedra,  a cornercorner with one O(26)Na4W2 octahedra, corners with two equivalent O(19)Na4W2 octahedra,  a cornercorner with one O(1)Na3W2 square pyramid,  a cornercorner with one O(10)Na3W2 square pyramid,  a cornercorner with one O(14)Na3W2 square pyramid,  a cornercorner with one O(16)Na3W2 square pyramid,  a cornercorner with one O(18)Na3W2 square pyramid,  a cornercorner with one O(23)Na3W2 square pyramid,  a cornercorner with one O(24)Na3W2 square pyramid,  a cornercorner with one O(25)Na3W2 square pyramid,  a cornercorner with one O(27)Na3W2 square pyramid, corners with two equivalent O(5)Na3W2 square pyramids, corners with two equivalent O(6)Na3W2 square pyramids,  an edgeedge with one O(13)Na3W2 square pyramid,  an edgeedge with one O(2)Na3W2 square pyramid,  an edgeedge with one O(20)Na3W2 square pyramid,  an edgeedge with one O(24)Na3W2 square pyramid,  an edgeedge with one O(25)Na3W2 square pyramid,  an edgeedge with one O(7)Na3W2 square pyramid,  a faceface with one O(26)Na4W2 octahedra,  a faceface with one O(9)Na4W2 octahedra,  a faceface with one O(1)Na3W2 square pyramid, and  a faceface with one O(4)Na3W2 square pyramid. The corner-sharing octahedral tilt angles range from 2-61°. In the twenty-second O site, O(22) is bonded to one Na(2), one Na(5), one Na(6), one W(4), and one W(6) atom to form distorted ONa3W2 square pyramids that share  a cornercorner with one O(19)Na4W2 octahedra,  a cornercorner with one O(26)Na4W2 octahedra, corners with two equivalent O(12)Na4W2 octahedra, corners with two equivalent O(17)Na4W2 octahedra,  a cornercorner with one O(16)Na3W2 square pyramid,  a cornercorner with one O(2)Na3W2 square pyramid,  a cornercorner with one O(23)Na3W2 square pyramid,  a cornercorner with one O(24)Na3W2 square pyramid,  a cornercorner with one O(6)Na3W2 square pyramid,  a cornercorner with one O(7)Na3W2 square pyramid, corners with two equivalent O(13)Na3W2 square pyramids, corners with two equivalent O(20)Na3W2 square pyramids, corners with two equivalent O(8)Na3W2 square pyramids,  an edgeedge with one O(19)Na4W2 octahedra,  an edgeedge with one O(14)Na3W2 square pyramid,  an edgeedge with one O(16)Na3W2 square pyramid,  an edgeedge with one O(18)Na3W2 square pyramid,  an edgeedge with one O(4)Na3W2 square pyramid,  a faceface with one O(9)Na4W2 octahedra,  a faceface with one O(10)Na3W2 square pyramid,  a faceface with one O(15)Na3W2 square pyramid, and  a faceface with one O(27)Na3W2 square pyramid. The corner-sharing octahedral tilt angles range from 2-61°. In the twenty-third O site, O(23) is bonded to one Na(3), one Na(5), one Na(7), one W(7), and one W(8) atom to form distorted ONa3W2 square pyramids that share  a cornercorner with one O(12)Na4W2 octahedra,  a cornercorner with one O(17)Na4W2 octahedra,  a cornercorner with one O(19)Na4W2 octahedra,  a cornercorner with one O(10)Na3W2 square pyramid,  a cornercorner with one O(16)Na3W2 square pyramid,  a cornercorner with one O(2)Na3W2 square pyramid,  a cornercorner with one O(20)Na3W2 square pyramid,  a cornercorner with one O(21)Na3W2 square pyramid,  a cornercorner with one O(22)Na3W2 square pyramid,  a cornercorner with one O(24)Na3W2 square pyramid,  a cornercorner with one O(4)Na3W2 square pyramid,  a cornercorner with one O(6)Na3W2 square pyramid,  a cornercorner with one O(8)Na3W2 square pyramid, corners with two equivalent O(1)Na3W2 square pyramids, corners with two equivalent O(15)Na3W2 square pyramids,  an edgeedge with one O(9)Na4W2 octahedra,  an edgeedge with one O(14)Na3W2 square pyramid,  an edgeedge with one O(18)Na3W2 square pyramid,  an edgeedge with one O(20)Na3W2 square pyramid,  an edgeedge with one O(25)Na3W2 square pyramid,  a faceface with one O(26)Na4W2 octahedra,  a faceface with one O(27)Na3W2 square pyramid,  a faceface with one O(5)Na3W2 square pyramid, and  a faceface with one O(7)Na3W2 square pyramid. The corner-sharing octahedral tilt angles range from 2-61°. In the twenty-fourth O site, O(24) is bonded to one Na(1), one Na(4), one Na(6), one W(7), and one W(9) atom to form distorted ONa3W2 square pyramids that share corners with two equivalent O(17)Na4W2 octahedra, corners with two equivalent O(9)Na4W2 octahedra,  a cornercorner with one O(10)Na3W2 square pyramid,  a cornercorner with one O(13)Na3W2 square pyramid,  a cornercorner with one O(14)Na3W2 square pyramid,  a cornercorner with one O(15)Na3W2 square pyramid,  a cornercorner with one O(16)Na3W2 square pyramid,  a cornercorner with one O(2)Na3W2 square pyramid,  a cornercorner with one O(20)Na3W2 square pyramid,  a cornercorner with one O(21)Na3W2 square pyramid,  a cornercorner with one O(22)Na3W2 square pyramid,  a cornercorner with one O(23)Na3W2 square pyramid,  a cornercorner with one O(4)Na3W2 square pyramid,  a cornercorner with one O(6)Na3W2 square pyramid,  a cornercorner with one O(7)Na3W2 square pyramid,  a cornercorner with one O(8)Na3W2 square pyramid,  an edgeedge with one O(12)Na4W2 octahedra,  an edgeedge with one O(1)Na3W2 square pyramid,  an edgeedge with one O(13)Na3W2 square pyramid,  an edgeedge with one O(21)Na3W2 square pyramid,  an edgeedge with one O(27)Na3W2 square pyramid,  an edgeedge with one O(5)Na3W2 square pyramid,  a faceface with one O(19)Na4W2 octahedra,  a faceface with one O(26)Na4W2 octahedra,  a faceface with one O(18)Na3W2 square pyramid, and  a faceface with one O(25)Na3W2 square pyramid. The corner-sharing octahedral tilt angles range from 2-61°. In the twenty-fifth O site, O(25) is bonded to one Na(1), one Na(3), one Na(4), one W(1), and one W(7) atom to form distorted ONa3W2 square pyramids that share  a cornercorner with one O(19)Na4W2 octahedra,  a cornercorner with one O(9)Na4W2 octahedra, corners with two equivalent O(12)Na4W2 octahedra,  a cornercorner with one O(10)Na3W2 square pyramid,  a cornercorner with one O(13)Na3W2 square pyramid,  a cornercorner with one O(14)Na3W2 square pyramid,  a cornercorner with one O(15)Na3W2 square pyramid,  a cornercorner with one O(16)Na3W2 square pyramid,  a cornercorner with one O(2)Na3W2 square pyramid,  a cornercorner with one O(20)Na3W2 square pyramid,  a cornercorner with one O(21)Na3W2 square pyramid,  a cornercorner with one O(27)Na3W2 square pyramid,  a cornercorner with one O(8)Na3W2 square pyramid, corners with two equivalent O(4)Na3W2 square pyramids, corners with two equivalent O(7)Na3W2 square pyramids,  an edgeedge with one O(17)Na4W2 octahedra,  an edgeedge with one O(26)Na4W2 octahedra,  an edgeedge with one O(18)Na3W2 square pyramid,  an edgeedge with one O(2)Na3W2 square pyramid,  an edgeedge with one O(21)Na3W2 square pyramid,  an edgeedge with one O(23)Na3W2 square pyramid,  a faceface with one O(1)Na3W2 square pyramid,  a faceface with one O(24)Na3W2 square pyramid,  a faceface with one O(5)Na3W2 square pyramid, and  a faceface with one O(6)Na3W2 square pyramid. The corner-sharing octahedral tilt angles range from 59-61°. In the twenty-sixth O site, O(26) is bonded to one Na(1), one Na(4), one Na(5), one Na(7), one W(8), and one W(9) atom to form distorted ONa4W2 octahedra that share  a cornercorner with one O(12)Na4W2 octahedra,  a cornercorner with one O(17)Na4W2 octahedra,  a cornercorner with one O(9)Na4W2 octahedra,  a cornercorner with one O(1)Na3W2 square pyramid,  a cornercorner with one O(14)Na3W2 square pyramid,  a cornercorner with one O(15)Na3W2 square pyramid,  a cornercorner with one O(2)Na3W2 square pyramid,  a cornercorner with one O(20)Na3W2 square pyramid,  a cornercorner with one O(21)Na3W2 square pyramid,  a cornercorner with one O(22)Na3W2 square pyramid,  a cornercorner with one O(6)Na3W2 square pyramid, corners with two equivalent O(10)Na3W2 square pyramids, corners with two equivalent O(13)Na3W2 square pyramids, corners with two equivalent O(18)Na3W2 square pyramids, corners with two equivalent O(5)Na3W2 square pyramids,  an edgeedge with one O(16)Na3W2 square pyramid,  an edgeedge with one O(25)Na3W2 square pyramid,  an edgeedge with one O(27)Na3W2 square pyramid,  an edgeedge with one O(4)Na3W2 square pyramid,  a faceface with one O(19)Na4W2 octahedra,  a faceface with one O(9)Na4W2 octahedra,  a faceface with one O(1)Na3W2 square pyramid,  a faceface with one O(20)Na3W2 square pyramid,  a faceface with one O(21)Na3W2 square pyramid,  a faceface with one O(23)Na3W2 square pyramid,  a faceface with one O(24)Na3W2 square pyramid, and  a faceface with one O(7)Na3W2 square pyramid. The corner-sharing octahedral tilt angles range from 0-61°. In the twenty-seventh O site, O(27) is bonded to one Na(5), one Na(6), one Na(7), one W(4), and one W(7) atom to form distorted ONa3W2 square pyramids that share  a cornercorner with one O(12)Na4W2 octahedra,  a cornercorner with one O(17)Na4W2 octahedra, corners with two equivalent O(19)Na4W2 octahedra,  a cornercorner with one O(1)Na3W2 square pyramid,  a cornercorner with one O(10)Na3W2 square pyramid,  a cornercorner with one O(13)Na3W2 square pyramid,  a cornercorner with one O(20)Na3W2 square pyramid,  a cornercorner with one O(21)Na3W2 square pyramid,  a cornercorner with one O(25)Na3W2 square pyramid,  a cornercorner with one O(4)Na3W2 square pyramid,  a cornercorner with one O(7)Na3W2 square pyramid,  a cornercorner with one O(8)Na3W2 square pyramid, corners with two equivalent O(14)Na3W2 square pyramids, corners with two equivalent O(16)Na3W2 square pyramids,  an edgeedge with one O(26)Na4W2 octahedra,  an edgeedge with one O(15)Na3W2 square pyramid,  an edgeedge with one O(20)Na3W2 square pyramid,  an edgeedge with one O(24)Na3W2 square pyramid,  an edgeedge with one O(5)Na3W2 square pyramid,  a faceface with one O(9)Na4W2 octahedra,  a faceface with one O(18)Na3W2 square pyramid,  a faceface with one O(22)Na3W2 square pyramid, and  a faceface with one O(23)Na3W2 square pyramid. The corner-sharing octahedral tilt angles range from 1-61°.
Na7(WO3)9 crystallizes in the triclinic P1 space group. There are seven inequivalent Na sites. In the first Na site, Na(1) is bonded to one O(1), one O(10), one O(17), one O(2), one O(21), one O(24), one O(25), one O(26), one O(4), one O(5), one O(6), and one O(7) atom to form NaO12 cuboctahedra that share  a cornercorner with one Na(2)O12 cuboctahedra,  a cornercorner with one Na(4)O12 cuboctahedra, corners with two equivalent Na(3)O12 cuboctahedra, corners with two equivalent Na(5)O12 cuboctahedra, corners with two equivalent Na(6)O12 cuboctahedra, corners with two equivalent Na(7)O12 cuboctahedra,  a faceface with one Na(2)O12 cuboctahedra,  a faceface with one Na(3)O12 cuboctahedra,  a faceface with one Na(4)O12 cuboctahedra,  a faceface with one Na(7)O12 cuboctahedra,  a faceface with one W(2)O6 octahedra,  a faceface with one W(5)O6 octahedra,  a faceface with one W(6)O6 octahedra,  a faceface with one W(7)O6 octahedra,  a faceface with one W(8)O6 octahedra,  a faceface with one W(9)O6 octahedra, and faces with two equivalent W(1)O6 octahedra. The Na(1)-O(1) bond length is 2.72 Å. The Na(1)-O(10) bond length is 2.73 Å. The Na(1)-O(17) bond length is 2.74 Å. The Na(1)-O(2) bond length is 2.74 Å. The Na(1)-O(21) bond length is 2.74 Å. The Na(1)-O(24) bond length is 2.73 Å. The Na(1)-O(25) bond length is 2.70 Å. The Na(1)-O(26) bond length is 2.72 Å. The Na(1)-O(4) bond length is 2.71 Å. The Na(1)-O(5) bond length is 2.74 Å. The Na(1)-O(6) bond length is 2.73 Å. The Na(1)-O(7) bond length is 2.73 Å. In the second Na site, Na(2) is bonded to one O(10), one O(12), one O(13), one O(16), one O(17), one O(19), one O(2), one O(22), one O(4), one O(6), one O(8), and one O(9) atom to form NaO12 cuboctahedra that share  a cornercorner with one Na(1)O12 cuboctahedra,  a cornercorner with one Na(3)O12 cuboctahedra,  a cornercorner with one Na(4)O12 cuboctahedra,  a cornercorner with one Na(5)O12 cuboctahedra, corners with two equivalent Na(6)O12 cuboctahedra, corners with two equivalent Na(7)O12 cuboctahedra,  a faceface with one Na(1)O12 cuboctahedra,  a faceface with one Na(3)O12 cuboctahedra,  a faceface with one Na(4)O12 cuboctahedra,  a faceface with one Na(5)O12 cuboctahedra,  a faceface with one Na(6)O12 cuboctahedra,  a faceface with one W(1)O6 octahedra,  a faceface with one W(2)O6 octahedra,  a faceface with one W(3)O6 octahedra,  a faceface with one W(4)O6 octahedra,  a faceface with one W(6)O6 octahedra,  a faceface with one W(9)O6 octahedra, and faces with two equivalent W(5)O6 octahedra. The Na(2)-O(10) bond length is 2.70 Å. The Na(2)-O(12) bond length is 2.74 Å. The Na(2)-O(13) bond length is 2.73 Å. The Na(2)-O(16) bond length is 2.72 Å. The Na(2)-O(17) bond length is 2.74 Å. The Na(2)-O(19) bond length is 2.74 Å. The Na(2)-O(2) bond length is 2.71 Å. The Na(2)-O(22) bond length is 2.72 Å. The Na(2)-O(4) bond length is 2.71 Å. The Na(2)-O(6) bond length is 2.72 Å. The Na(2)-O(8) bond length is 2.72 Å. The Na(2)-O(9) bond length is 2.73 Å. In the third Na site, Na(3) is bonded to one O(12), one O(14), one O(15), one O(17), one O(2), one O(23), one O(25), one O(3), one O(5), one O(6), one O(7), and one O(8) atom to form NaO12 cuboctahedra that share  a cornercorner with one Na(2)O12 cuboctahedra,  a cornercorner with one Na(6)O12 cuboctahedra,  a cornercorner with one Na(7)O12 cuboctahedra, corners with two equivalent Na(1)O12 cuboctahedra, corners with two equivalent Na(4)O12 cuboctahedra, corners with two equivalent Na(5)O12 cuboctahedra,  a faceface with one Na(1)O12 cuboctahedra,  a faceface with one Na(2)O12 cuboctahedra,  a faceface with one Na(6)O12 cuboctahedra,  a faceface with one Na(7)O12 cuboctahedra,  a faceface with one W(1)O6 octahedra,  a faceface with one W(3)O6 octahedra,  a faceface with one W(5)O6 octahedra,  a faceface with one W(6)O6 octahedra,  a faceface with one W(7)O6 octahedra,  a faceface with one W(8)O6 octahedra, and faces with two equivalent W(2)O6 octahedra. The Na(3)-O(12) bond length is 2.76 Å. The Na(3)-O(14) bond length is 2.73 Å. The Na(3)-O(15) bond length is 2.73 Å. The Na(3)-O(17) bond length is 2.78 Å. The Na(3)-O(2) bond length is 2.72 Å. The Na(3)-O(23) bond length is 2.71 Å. The Na(3)-O(25) bond length is 2.74 Å. The Na(3)-O(3) bond length is 2.69 Å. The Na(3)-O(5) bond length is 2.72 Å. The Na(3)-O(6) bond length is 2.73 Å. The Na(3)-O(7) bond length is 2.70 Å. The Na(3)-O(8) bond length is 2.71 Å. In the fourth Na site, Na(4) is bonded to one O(1), one O(12), one O(13), one O(16), one O(18), one O(19), one O(20), one O(21), one O(24), one O(25), one O(26), and one O(9) atom to form NaO12 cuboctahedra that share  a cornercorner with one Na(1)O12 cuboctahedra,  a cornercorner with one Na(2)O12 cuboctahedra,  a cornercorner with one Na(6)O12 cuboctahedra,  a cornercorner with one Na(7)O12 cuboctahedra, corners with two equivalent Na(3)O12 cuboctahedra, corners with two equivalent Na(5)O12 cuboctahedra,  a faceface with one Na(1)O12 cuboctahedra,  a faceface with one Na(2)O12 cuboctahedra,  a faceface with one Na(5)O12 cuboctahedra,  a faceface with one Na(6)O12 cuboctahedra,  a faceface with one Na(7)O12 cuboctahedra,  a faceface with one W(1)O6 octahedra,  a faceface with one W(3)O6 octahedra,  a faceface with one W(4)O6 octahedra,  a faceface with one W(5)O6 octahedra,  a faceface with one W(7)O6 octahedra,  a faceface with one W(8)O6 octahedra, and faces with two equivalent W(9)O6 octahedra. The Na(4)-O(1) bond length is 2.71 Å. The Na(4)-O(12) bond length is 2.73 Å. The Na(4)-O(13) bond length is 2.70 Å. The Na(4)-O(16) bond length is 2.73 Å. The Na(4)-O(18) bond length is 2.71 Å. The Na(4)-O(19) bond length is 2.76 Å. The Na(4)-O(20) bond length is 2.73 Å. The Na(4)-O(21) bond length is 2.71 Å. The Na(4)-O(24) bond length is 2.71 Å. The Na(4)-O(25) bond length is 2.71 Å. The Na(4)-O(26) bond length is 2.76 Å. The Na(4)-O(9) bond length is 2.73 Å. In the fifth Na site, Na(5) is bonded to one O(10), one O(11), one O(15), one O(16), one O(18), one O(19), one O(20), one O(22), one O(23), one O(26), one O(27), and one O(9) atom to form NaO12 cuboctahedra that share  a cornercorner with one Na(2)O12 cuboctahedra,  a cornercorner with one Na(7)O12 cuboctahedra, corners with two equivalent Na(1)O12 cuboctahedra, corners with two equivalent Na(3)O12 cuboctahedra, corners with two equivalent Na(4)O12 cuboctahedra, corners with two equivalent Na(6)O12 cuboctahedra,  a faceface with one Na(2)O12 cuboctahedra,  a faceface with one Na(4)O12 cuboctahedra,  a faceface with one Na(6)O12 cuboctahedra,  a faceface with one Na(7)O12 cuboctahedra,  a faceface with one W(3)O6 octahedra,  a faceface with one W(5)O6 octahedra,  a faceface with one W(6)O6 octahedra,  a faceface with one W(7)O6 octahedra,  a faceface with one W(8)O6 octahedra,  a faceface with one W(9)O6 octahedra, and faces with two equivalent W(4)O6 octahedra. The Na(5)-O(10) bond length is 2.75 Å. The Na(5)-O(11) bond length is 2.71 Å. The Na(5)-O(15) bond length is 2.73 Å. The Na(5)-O(16) bond length is 2.73 Å. The Na(5)-O(18) bond length is 2.71 Å. The Na(5)-O(19) bond length is 2.75 Å. The Na(5)-O(20) bond length is 2.72 Å. The Na(5)-O(22) bond length is 2.72 Å. The Na(5)-O(23) bond length is 2.72 Å. The Na(5)-O(26) bond length is 2.74 Å. The Na(5)-O(27) bond length is 2.71 Å. The Na(5)-O(9) bond length is 2.76 Å. In the sixth Na site, Na(6) is bonded to one O(11), one O(12), one O(13), one O(14), one O(15), one O(17), one O(18), one O(19), one O(22), one O(24), one O(27), and one O(8) atom to form NaO12 cuboctahedra that share  a cornercorner with one Na(3)O12 cuboctahedra,  a cornercorner with one Na(4)O12 cuboctahedra, corners with two equivalent Na(1)O12 cuboctahedra, corners with two equivalent Na(2)O12 cuboctahedra, corners with two equivalent Na(5)O12 cuboctahedra, corners with two equivalent Na(7)O12 cuboctahedra,  a faceface with one Na(2)O12 cuboctahedra,  a faceface with one Na(3)O12 cuboctahedra,  a faceface with one Na(4)O12 cuboctahedra,  a faceface with one Na(5)O12 cuboctahedra,  a faceface with one W(2)O6 octahedra,  a faceface with one W(4)O6 octahedra,  a faceface with one W(5)O6 octahedra,  a faceface with one W(6)O6 octahedra,  a faceface with one W(7)O6 octahedra,  a faceface with one W(9)O6 octahedra, and faces with two equivalent W(3)O6 octahedra. The Na(6)-O(11) bond length is 2.71 Å. The Na(6)-O(12) bond length is 2.76 Å. The Na(6)-O(13) bond length is 2.73 Å. The Na(6)-O(14) bond length is 2.71 Å. The Na(6)-O(15) bond length is 2.71 Å. The Na(6)-O(17) bond length is 2.74 Å. The Na(6)-O(18) bond length is 2.72 Å. The Na(6)-O(19) bond length is 2.76 Å. The Na(6)-O(22) bond length is 2.71 Å. The Na(6)-O(24) bond length is 2.75 Å. The Na(6)-O(27) bond length is 2.73 Å. The Na(6)-O(8) bond length is 2.72 Å. In the seventh Na site, Na(7) is bonded to one O(1), one O(14), one O(20), one O(21), one O(23), one O(26), one O(27), one O(3), one O(4), one O(5), one O(7), and one O(9) atom to form NaO12 cuboctahedra that share  a cornercorner with one Na(3)O12 cuboctahedra,  a cornercorner with one Na(4)O12 cuboctahedra,  a cornercorner with one Na(5)O12 cuboctahedra, corners with two equivalent Na(1)O12 cuboctahedra, corners with two equivalent Na(2)O12 cuboctahedra, corners with two equivalent Na(6)O12 cuboctahedra,  a faceface with one Na(1)O12 cuboctahedra,  a faceface with one Na(3)O12 cuboctahedra,  a faceface with one Na(4)O12 cuboctahedra,  a faceface with one Na(5)O12 cuboctahedra,  a faceface with one W(1)O6 octahedra,  a faceface with one W(2)O6 octahedra,  a faceface with one W(4)O6 octahedra,  a faceface with one W(6)O6 octahedra,  a faceface with one W(7)O6 octahedra,  a faceface with one W(9)O6 octahedra, and faces with two equivalent W(8)O6 octahedra. The Na(7)-O(1) bond length is 2.73 Å. The Na(7)-O(14) bond length is 2.72 Å. The Na(7)-O(20) bond length is 2.71 Å. The Na(7)-O(21) bond length is 2.73 Å. The Na(7)-O(23) bond length is 2.72 Å. The Na(7)-O(26) bond length is 2.77 Å. The Na(7)-O(27) bond length is 2.72 Å. The Na(7)-O(3) bond length is 2.70 Å. The Na(7)-O(4) bond length is 2.75 Å. The Na(7)-O(5) bond length is 2.70 Å. The Na(7)-O(7) bond length is 2.72 Å. The Na(7)-O(9) bond length is 2.75 Å. There are nine inequivalent W sites. In the first W site, W(1) is bonded to one O(1), one O(2), one O(21), one O(25), one O(4), and one O(6) atom to form WO6 octahedra that share  a cornercorner with one W(2)O6 octahedra,  a cornercorner with one W(5)O6 octahedra,  a cornercorner with one W(6)O6 octahedra,  a cornercorner with one W(7)O6 octahedra,  a cornercorner with one W(8)O6 octahedra,  a cornercorner with one W(9)O6 octahedra,  a faceface with one Na(2)O12 cuboctahedra,  a faceface with one Na(3)O12 cuboctahedra,  a faceface with one Na(4)O12 cuboctahedra,  a faceface with one Na(7)O12 cuboctahedra, and faces with two equivalent Na(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 2°. The W(1)-O(1) bond length is 1.93 Å. The W(1)-O(2) bond length is 1.93 Å. The W(1)-O(21) bond length is 1.93 Å. The W(1)-O(25) bond length is 1.93 Å. The W(1)-O(4) bond length is 1.93 Å. The W(1)-O(6) bond length is 1.93 Å. In the second W site, W(2) is bonded to one O(14), one O(17), one O(2), one O(3), one O(5), and one O(8) atom to form WO6 octahedra that share  a cornercorner with one W(1)O6 octahedra,  a cornercorner with one W(3)O6 octahedra,  a cornercorner with one W(5)O6 octahedra,  a cornercorner with one W(6)O6 octahedra,  a cornercorner with one W(7)O6 octahedra,  a cornercorner with one W(8)O6 octahedra,  a faceface with one Na(1)O12 cuboctahedra,  a faceface with one Na(2)O12 cuboctahedra,  a faceface with one Na(6)O12 cuboctahedra,  a faceface with one Na(7)O12 cuboctahedra, and faces with two equivalent Na(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-3°. The W(2)-O(14) bond length is 1.93 Å. The W(2)-O(17) bond length is 1.95 Å. The W(2)-O(2) bond length is 1.93 Å. The W(2)-O(3) bond length is 1.91 Å. The W(2)-O(5) bond length is 1.93 Å. The W(2)-O(8) bond length is 1.93 Å. In the third W site, W(3) is bonded to one O(11), one O(12), one O(13), one O(15), one O(18), and one O(8) atom to form WO6 octahedra that share  a cornercorner with one W(2)O6 octahedra,  a cornercorner with one W(4)O6 octahedra,  a cornercorner with one W(5)O6 octahedra,  a cornercorner with one W(6)O6 octahedra,  a cornercorner with one W(7)O6 octahedra,  a cornercorner with one W(9)O6 octahedra,  a faceface with one Na(2)O12 cuboctahedra,  a faceface with one Na(3)O12 cuboctahedra,  a faceface with one Na(4)O12 cuboctahedra,  a faceface with one Na(5)O12 cuboctahedra, and faces with two equivalent Na(6)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-3°. The W(3)-O(11) bond length is 1.91 Å. The W(3)-O(12) bond length is 1.95 Å. The W(3)-O(13) bond length is 1.94 Å. The W(3)-O(15) bond length is 1.93 Å. The W(3)-O(18) bond length is 1.93 Å. The W(3)-O(8) bond length is 1.93 Å. In the fourth W site, W(4) is bonded to one O(11), one O(16), one O(20), one O(22), one O(27), and one O(9) atom to form WO6 octahedra that share  a cornercorner with one W(3)O6 octahedra,  a cornercorner with one W(5)O6 octahedra,  a cornercorner with one W(6)O6 octahedra,  a cornercorner with one W(7)O6 octahedra,  a cornercorner with one W(8)O6 octahedra,  a cornercorner with one W(9)O6 octahedra,  a faceface with one Na(2)O12 cuboctahedra,  a faceface with one Na(4)O12 cuboctahedra,  a faceface with one Na(6)O12 cuboctahedra,  a faceface with one Na(7)O12 cuboctahedra, and faces with two equivalent Na(5)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-2°. The W(4)-O(11) bond length is 1.91 Å. The W(4)-O(16) bond length is 1.94 Å. The W(4)-O(20) bond length is 1.93 Å. The W(4)-O(22) bond length is 1.93 Å. The W(4)-O(27) bond length is 1.93 Å. The W(4)-O(9) bond length is 1.95 Å. In the fifth W site, W(5) is bonded to one O(10), one O(12), one O(16), one O(17), one O(19), and one O(6) atom to form WO6 octahedra that share  a cornercorner with one W(1)O6 octahedra,  a cornercorner with one W(2)O6 octahedra,  a cornercorner with one W(3)O6 octahedra,  a cornercorner with one W(4)O6 octahedra,  a cornercorner with one W(6)O6 octahedra,  a cornercorner with one W(9)O6 octahedra,  a faceface with one Na(1)O12 cuboctahedra,  a faceface with one Na(3)O12 cuboctahedra,  a faceface with one Na(4)O12 cuboctahedra,  a faceface with one Na(5)O12 cuboctahedra,  a faceface with one Na(6)O12 cuboctahedra, and faces with two equivalent Na(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-2°. The W(5)-O(10) bond length is 1.92 Å. The W(5)-O(12) bond length is 1.94 Å. The W(5)-O(16) bond length is 1.92 Å. The W(5)-O(17) bond length is 1.94 Å. The W(5)-O(19) bond length is 1.94 Å. The W(5)-O(6) bond length is 1.92 Å. In the sixth W site, W(6) is bonded to one O(10), one O(14), one O(15), one O(22), one O(4), and one O(7) atom to form WO6 octahedra that share  a cornercorner with one W(1)O6 octahedra,  a cornercorner with one W(2)O6 octahedra,  a cornercorner with one W(3)O6 octahedra,  a cornercorner with one W(4)O6 octahedra,  a cornercorner with one W(5)O6 octahedra,  a cornercorner with one W(8)O6 octahedra,  a faceface with one Na(1)O12 cuboctahedra,  a faceface with one Na(2)O12 cuboctahedra,  a faceface with one Na(3)O12 cuboctahedra,  a faceface with one Na(5)O12 cuboctahedra,  a faceface with one Na(6)O12 cuboctahedra, and  a faceface with one Na(7)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 2°. The W(6)-O(10) bond length is 1.94 Å. The W(6)-O(14) bond length is 1.93 Å. The W(6)-O(15) bond length is 1.93 Å. The W(6)-O(22) bond length is 1.93 Å. The W(6)-O(4) bond length is 1.93 Å. The W(6)-O(7) bond length is 1.93 Å. In the seventh W site, W(7) is bonded to one O(18), one O(23), one O(24), one O(25), one O(27), and one O(5) atom to form WO6 octahedra that share  a cornercorner with one W(1)O6 octahedra,  a cornercorner with one W(2)O6 octahedra,  a cornercorner with one W(3)O6 octahedra,  a cornercorner with one W(4)O6 octahedra,  a cornercorner with one W(8)O6 octahedra,  a cornercorner with one W(9)O6 octahedra,  a faceface with one Na(1)O12 cuboctahedra,  a faceface with one Na(3)O12 cuboctahedra,  a faceface with one Na(4)O12 cuboctahedra,  a faceface with one Na(5)O12 cuboctahedra,  a faceface with one Na(6)O12 cuboctahedra, and  a faceface with one Na(7)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 2°. The W(7)-O(18) bond length is 1.93 Å. The W(7)-O(23) bond length is 1.93 Å. The W(7)-O(24) bond length is 1.94 Å. The W(7)-O(25) bond length is 1.93 Å. The W(7)-O(27) bond length is 1.93 Å. The W(7)-O(5) bond length is 1.93 Å. In the eighth W site, W(8) is bonded to one O(1), one O(20), one O(23), one O(26), one O(3), and one O(7) atom to form WO6 octahedra that share  a cornercorner with one W(1)O6 octahedra,  a cornercorner with one W(2)O6 octahedra,  a cornercorner with one W(4)O6 octahedra,  a cornercorner with one W(6)O6 octahedra,  a cornercorner with one W(7)O6 octahedra,  a cornercorner with one W(9)O6 octahedra,  a faceface with one Na(1)O12 cuboctahedra,  a faceface with one Na(3)O12 cuboctahedra,  a faceface with one Na(4)O12 cuboctahedra,  a faceface with one Na(5)O12 cuboctahedra, and faces with two equivalent Na(7)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-2°. The W(8)-O(1) bond length is 1.93 Å. The W(8)-O(20) bond length is 1.93 Å. The W(8)-O(23) bond length is 1.93 Å. The W(8)-O(26) bond length is 1.95 Å. The W(8)-O(3) bond length is 1.91 Å. The W(8)-O(7) bond length is 1.93 Å. In the ninth W site, W(9) is bonded to one O(13), one O(19), one O(21), one O(24), one O(26), and one O(9) atom to form WO6 octahedra that share  a cornercorner with one W(1)O6 octahedra,  a cornercorner with one W(3)O6 octahedra,  a cornercorner with one W(4)O6 octahedra,  a cornercorner with one W(5)O6 octahedra,  a cornercorner with one W(7)O6 octahedra,  a cornercorner with one W(8)O6 octahedra,  a faceface with one Na(1)O12 cuboctahedra,  a faceface with one Na(2)O12 cuboctahedra,  a faceface with one Na(5)O12 cuboctahedra,  a faceface with one Na(6)O12 cuboctahedra,  a faceface with one Na(7)O12 cuboctahedra, and faces with two equivalent Na(4)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-2°. The W(9)-O(13) bond length is 1.92 Å. The W(9)-O(19) bond length is 1.94 Å. The W(9)-O(21) bond length is 1.92 Å. The W(9)-O(24) bond length is 1.92 Å. The W(9)-O(26) bond length is 1.94 Å. The W(9)-O(9) bond length is 1.94 Å. There are twenty-seven inequivalent O sites. In the first O site, O(1) is bonded to one Na(1), one Na(4), one Na(7), one W(1), and one W(8) atom to form distorted ONa3W2 square pyramids that share  a cornercorner with one O(12)Na4W2 octahedra,  a cornercorner with one O(17)Na4W2 octahedra,  a cornercorner with one O(19)Na4W2 octahedra,  a cornercorner with one O(26)Na4W2 octahedra,  a cornercorner with one O(10)Na3W2 square pyramid,  a cornercorner with one O(13)Na3W2 square pyramid,  a cornercorner with one O(14)Na3W2 square pyramid,  a cornercorner with one O(16)Na3W2 square pyramid,  a cornercorner with one O(18)Na3W2 square pyramid,  a cornercorner with one O(21)Na3W2 square pyramid,  a cornercorner with one O(27)Na3W2 square pyramid,  a cornercorner with one O(4)Na3W2 square pyramid,  a cornercorner with one O(7)Na3W2 square pyramid, corners with two equivalent O(2)Na3W2 square pyramids, corners with two equivalent O(23)Na3W2 square pyramids, corners with two equivalent O(5)Na3W2 square pyramids,  an edgeedge with one O(9)Na4W2 octahedra,  an edgeedge with one O(24)Na3W2 square pyramid,  an edgeedge with one O(4)Na3W2 square pyramid,  an edgeedge with one O(6)Na3W2 square pyramid,  an edgeedge with one O(7)Na3W2 square pyramid,  a faceface with one O(26)Na4W2 octahedra,  a faceface with one O(20)Na3W2 square pyramid,  a faceface with one O(21)Na3W2 square pyramid, and  a faceface with one O(25)Na3W2 square pyramid. The corner-sharing octahedral tilt angles range from 2-61°. In the second O site, O(2) is bonded to one Na(1), one Na(2), one Na(3), one W(1), and one W(2) atom to form distorted ONa3W2 square pyramids that share  a cornercorner with one O(17)Na4W2 octahedra,  a cornercorner with one O(19)Na4W2 octahedra,  a cornercorner with one O(26)Na4W2 octahedra,  a cornercorner with one O(9)Na4W2 octahedra,  a cornercorner with one O(13)Na3W2 square pyramid,  a cornercorner with one O(15)Na3W2 square pyramid,  a cornercorner with one O(16)Na3W2 square pyramid,  a cornercorner with one O(22)Na3W2 square pyramid,  a cornercorner with one O(23)Na3W2 square pyramid,  a cornercorner with one O(24)Na3W2 square pyramid,  a cornercorner with one O(25)Na3W2 square pyramid,  a cornercorner with one O(5)Na3W2 square pyramid,  a cornercorner with one O(6)Na3W2 square pyramid, corners with two equivalent O(1)Na3W2 square pyramids, corners with two equivalent O(14)Na3W2 square pyramids, corners with two equivalent O(7)Na3W2 square pyramids,  an edgeedge with one O(12)Na4W2 octahedra,  an edgeedge with one O(10)Na3W2 square pyramid,  an edgeedge with one O(21)Na3W2 square pyramid,  an edgeedge with one O(25)Na3W2 square pyramid,  an edgeedge with one O(5)Na3W2 square pyramid,  a faceface with one O(17)Na4W2 octahedra,  a faceface with one O(4)Na3W2 square pyramid,  a faceface with one O(6)Na3W2 square pyramid, and  a faceface with one O(8)Na3W2 square pyramid. The corner-sharing octahedral tilt angles range from 1-61°. In the third O site, O(3) is bonded in a distorted rectangular see-saw-like geometry to one Na(3), one Na(7), one W(2), and one W(8) atom. In the fourth O site, O(4) is bonded to one Na(1), one Na(2), one Na(7), one W(1), and one W(6) atom to form distorted ONa3W2 square pyramids that share  a cornercorner with one O(12)Na4W2 octahedra,  a cornercorner with one O(19)Na4W2 octahedra, corners with two equivalent O(9)Na4W2 octahedra,  a cornercorner with one O(1)Na3W2 square pyramid,  a cornercorner with one O(13)Na3W2 square pyramid,  a cornercorner with one O(15)Na3W2 square pyramid,  a cornercorner with one O(16)Na3W2 square pyramid,  a cornercorner with one O(20)Na3W2 square pyramid,  a cornercorner with one O(23)Na3W2 square pyramid,  a cornercorner with one O(24)Na3W2 square pyramid,  a cornercorner with one O(27)Na3W2 square pyramid,  a cornercorner with one O(6)Na3W2 square pyramid,  a cornercorner with one O(8)Na3W2 square pyramid, corners with two equivalent O(25)Na3W2 square pyramids, corners with two equivalent O(5)Na3W2 square pyramids,  an edgeedge with one O(17)Na4W2 octahedra,  an edgeedge with one O(26)Na4W2 octahedra,  an edgeedge with one O(1)Na3W2 square pyramid,  an edgeedge with one O(14)Na3W2 square pyramid,  an edgeedge with one O(22)Na3W2 square pyramid,  an edgeedge with one O(6)Na3W2 square pyramid,  a faceface with one O(10)Na3W2 square pyramid,  a faceface with one O(2)Na3W2 square pyramid,  a faceface with one O(21)Na3W2 square pyramid, and  a faceface with one O(7)Na3W2 square pyramid. The corner-sharing octahedral tilt angles range from 59-61°. In the fifth O site, O(5) is bonded to one Na(1), one Na(3), one Na(7), one W(2), and one W(7) atom to form distorted ONa3W2 square pyramids that share  a cornercorner with one O(12)Na4W2 octahedra,  a cornercorner with one O(9)Na4W2 octahedra, corners with two equivalent O(26)Na4W2 octahedra,  a cornercorner with one O(10)Na3W2 square pyramid,  a cornercorner with one O(15)Na3W2 square pyramid,  a cornercorner with one O(18)Na3W2 square pyramid,  a cornercorner with one O(2)Na3W2 square pyramid,  a cornercorner with one O(20)Na3W2 square pyramid,  a cornercorner with one O(7)Na3W2 square pyramid, corners with two equivalent O(1)Na3W2 square pyramids, corners with two equivalent O(21)Na3W2 square pyramids, corners with two equivalent O(4)Na3W2 square pyramids, corners with two equivalent O(8)Na3W2 square pyramids,  an edgeedge with one O(2)Na3W2 square pyramid,  an edgeedge with one O(24)Na3W2 square pyramid,  an edgeedge with one O(27)Na3W2 square pyramid,  an edgeedge with one O(6)Na3W2 square pyramid,  an edgeedge with one O(7)Na3W2 square pyramid,  a faceface with one O(17)Na4W2 octahedra,  a faceface with one O(14)Na3W2 square pyramid,  a faceface with one O(23)Na3W2 square pyramid, and  a faceface with one O(25)Na3W2 square pyramid. The corner-sharing octahedral tilt angles range from 59-62°. In the sixth O site, O(6) is bonded to one Na(1), one Na(2), one Na(3), one W(1), and one W(5) atom to form distorted ONa3W2 square pyramids that share  a cornercorner with one O(17)Na4W2 octahedra,  a cornercorner with one O(26)Na4W2 octahedra,  a cornercorner with one O(9)Na4W2 octahedra, corners with two equivalent O(19)Na4W2 octahedra,  a cornercorner with one O(10)Na3W2 square pyramid,  a cornercorner with one O(13)Na3W2 square pyramid,  a cornercorner with one O(14)Na3W2 square pyramid,  a cornercorner with one O(15)Na3W2 square pyramid,  a cornercorner with one O(2)Na3W2 square pyramid,  a cornercorner with one O(22)Na3W2 square pyramid,  a cornercorner with one O(23)Na3W2 square pyramid,  a cornercorner with one O(24)Na3W2 square pyramid,  a cornercorner with one O(4)Na3W2 square pyramid, corners with two equivalent O(21)Na3W2 square pyramids, corners with two equivalent O(7)Na3W2 square pyramids,  an edgeedge with one O(1)Na3W2 square pyramid,  an edgeedge with one O(10)Na3W2 square pyramid,  an edgeedge with one O(16)Na3W2 square pyramid,  an edgeedge with one O(4)Na3W2 square pyramid,  an edgeedge with one O(5)Na3W2 square pyramid,  an edgeedge with one O(8)Na3W2 square pyramid,  a faceface with one O(12)Na4W2 octahedra,  a faceface with one O(17)Na4W2 octahedra,  a faceface with one O(2)Na3W2 square pyramid, and  a faceface with one O(25)Na3W2 square pyramid. The corner-sharing octahedral tilt angles range from 2-60°. In the seventh O site, O(7) is bonded to one Na(1), one Na(3), one Na(7), one W(6), and one W(8) atom to form distorted ONa3W2 square pyramids that share  a cornercorner with one O(12)Na4W2 octahedra,  a cornercorner with one O(9)Na4W2 octahedra, corners with two equivalent O(17)Na4W2 octahedra,  a cornercorner with one O(1)Na3W2 square pyramid,  a cornercorner with one O(22)Na3W2 square pyramid,  a cornercorner with one O(24)Na3W2 square pyramid,  a cornercorner with one O(27)Na3W2 square pyramid,  a cornercorner with one O(5)Na3W2 square pyramid,  a cornercorner with one O(8)Na3W2 square pyramid, corners with two equivalent O(2)Na3W2 square pyramids, corners with two equivalent O(20)Na3W2 square pyramids, corners with two equivalent O(25)Na3W2 square pyramids, corners with two equivalent O(6)Na3W2 square pyramids,  an edgeedge with one O(1)Na3W2 square pyramid,  an edgeedge with one O(10)Na3W2 square pyramid,  an edgeedge with one O(15)Na3W2 square pyramid,  an edgeedge with one O(21)Na3W2 square pyramid,  an edgeedge with one O(5)Na3W2 square pyramid,  a faceface with one O(26)Na4W2 octahedra,  a faceface with one O(14)Na3W2 square pyramid,  a faceface with one O(23)Na3W2 square pyramid, and  a faceface with one O(4)Na3W2 square pyramid. The corner-sharing octahedral tilt angles range from 60-61°. In the eighth O site, O(8) is bonded to one Na(2), one Na(3), one Na(6), one W(2), and one W(3) atom to form distorted ONa3W2 square pyramids that share  a cornercorner with one O(12)Na4W2 octahedra,  a cornercorner with one O(17)Na4W2 octahedra,  a cornercorner with one O(9)Na4W2 octahedra,  a cornercorner with one O(10)Na3W2 square pyramid,  a cornercorner with one O(14)Na3W2 square pyramid,  a cornercorner with one O(15)Na3W2 square pyramid,  a cornercorner with one O(16)Na3W2 square pyramid,  a cornercorner with one O(23)Na3W2 square pyramid,  a cornercorner with one O(24)Na3W2 square pyramid,  a cornercorner with one O(25)Na3W2 square pyramid,  a cornercorner with one O(27)Na3W2 square pyramid,  a cornercorner with one O(4)Na3W2 square pyramid,  a cornercorner with one O(7)Na3W2 square pyramid, corners with two equivalent O(18)Na3W2 square pyramids, corners with two equivalent O(22)Na3W2 square pyramids, corners with two equivalent O(5)Na3W2 square pyramids,  an edgeedge with one O(19)Na4W2 octahedra,  an edgeedge with one O(14)Na3W2 square pyramid,  an edgeedge with one O(15)Na3W2 square pyramid,  an edgeedge with one O(6)Na3W2 square pyramid,  a faceface with one O(12)Na4W2 octahedra,  a faceface with one O(17)Na4W2 octahedra,  a faceface with one O(13)Na3W2 square pyramid, and  a faceface with one O(2)Na3W2 square pyramid. The corner-sharing octahedral tilt angles are 61°. In the ninth O site, O(9) is bonded to one Na(2), one Na(4), one Na(5), one Na(7), one W(4), and one W(9) atom to form distorted ONa4W2 octahedra that share  a cornercorner with one O(17)Na4W2 octahedra,  a cornercorner with one O(19)Na4W2 octahedra,  a cornercorner with one O(26)Na4W2 octahedra,  a cornercorner with one O(14)Na3W2 square pyramid,  a cornercorner with one O(15)Na3W2 square pyramid,  a cornercorner with one O(16)Na3W2 square pyramid,  a cornercorner with one O(2)Na3W2 square pyramid,  a cornercorner with one O(20)Na3W2 square pyramid,  a cornercorner with one O(25)Na3W2 square pyramid,  a cornercorner with one O(5)Na3W2 square pyramid,  a cornercorner with one O(6)Na3W2 square pyramid,  a cornercorner with one O(7)Na3W2 square pyramid,  a cornercorner with one O(8)Na3W2 square pyramid, corners with two equivalent O(18)Na3W2 square pyramids, corners with two equivalent O(24)Na3W2 square pyramids, corners with two equivalent O(4)Na3W2 square pyramids,  an edgeedge with one O(12)Na4W2 octahedra,  an edgeedge with one O(1)Na3W2 square pyramid,  an edgeedge with one O(10)Na3W2 square pyramid,  an edgeedge with one O(23)Na3W2 square pyramid,  a faceface with one O(19)Na4W2 octahedra,  a faceface with one O(26)Na4W2 octahedra,  a faceface with one O(13)Na3W2 square pyramid,  a faceface with one O(16)Na3W2 square pyramid,  a faceface with one O(20)Na3W2 square pyramid,  a faceface with one O(21)Na3W2 square pyramid,  a faceface with one O(22)Na3W2 square pyramid, and  a faceface with one O(27)Na3W2 square pyramid. The corner-sharing octahedral tilt angles range from 60-61°. In the tenth O site, O(10) is bonded to one Na(1), one Na(2), one Na(5), one W(5), and one W(6) atom to form distorted ONa3W2 square pyramids that share corners with two equivalent O(12)Na4W2 octahedra, corners with two equivalent O(26)Na4W2 octahedra,  a cornercorner with one O(1)Na3W2 square pyramid,  a cornercorner with one O(13)Na3W2 square pyramid,  a cornercorner with one O(14)Na3W2 square pyramid,  a cornercorner with one O(16)Na3W2 square pyramid,  a cornercorner with one O(18)Na3W2 square pyramid,  a cornercorner with one O(20)Na3W2 square pyramid,  a cornercorner with one O(21)Na3W2 square pyramid,  a cornercorner with one O(23)Na3W2 square pyramid,  a cornercorner with one O(24)Na3W2 square pyramid,  a cornercorner with one O(25)Na3W2 square pyramid,  a cornercorner with one O(27)Na3W2 square pyramid,  a cornercorner with one O(5)Na3W2 square pyramid,  a cornercorner with one O(6)Na3W2 square pyramid,  a cornercorner with one O(8)Na3W2 square pyramid,  an edgeedge with one O(9)Na4W2 octahedra,  an edgeedge with one O(15)Na3W2 square pyramid,  an edgeedge with one O(16)Na3W2 square pyramid,  an edgeedge with one O(2)Na3W2 square pyramid,  an edgeedge with one O(6)Na3W2 square pyramid,  an edgeedge with one O(7)Na3W2 square pyramid,  a faceface with one O(17)Na4W2 octahedra,  a faceface with one O(19)Na4W2 octahedra,  a faceface with one O(22)Na3W2 square pyramid, and  a faceface with one O(4)Na3W2 square pyramid. The corner-sharing octahedral tilt angles range from 1-61°. In the eleventh O site, O(11) is bonded in a distorted square co-planar geometry to one Na(5), one Na(6), one W(3), and one W(4) atom. In the twelfth O site, O(12) is bonded to one Na(2), one Na(3), one Na(4), one Na(6), one W(3), and one W(5) atom to form distorted ONa4W2 octahedra that share  a cornercorner with one O(17)Na4W2 octahedra,  a cornercorner with one O(19)Na4W2 octahedra,  a cornercorner with one O(26)Na4W2 octahedra,  a cornercorner with one O(1)Na3W2 square pyramid,  a cornercorner with one O(13)Na3W2 square pyramid,  a cornercorner with one O(20)Na3W2 square pyramid,  a cornercorner with one O(21)Na3W2 square pyramid,  a cornercorner with one O(23)Na3W2 square pyramid,  a cornercorner with one O(27)Na3W2 square pyramid,  a cornercorner with one O(4)Na3W2 square pyramid,  a cornercorner with one O(5)Na3W2 square pyramid,  a cornercorner with one O(7)Na3W2 square pyramid,  a cornercorner with one O(8)Na3W2 square pyramid, corners with two equivalent O(10)Na3W2 square pyramids, corners with two equivalent O(22)Na3W2 square pyramids, corners with two equivalent O(25)Na3W2 square pyramids,  an edgeedge with one O(9)Na4W2 octahedra,  an edgeedge with one O(14)Na3W2 square pyramid,  an edgeedge with one O(2)Na3W2 square pyramid,  an edgeedge with one O(24)Na3W2 square pyramid,  a faceface with one O(17)Na4W2 octahedra,  a faceface with one O(19)Na4W2 octahedra,  a faceface with one O(13)Na3W2 square pyramid,  a faceface with one O(15)Na3W2 square pyramid,  a faceface with one O(16)Na3W2 square pyramid,  a faceface with one O(18)Na3W2 square pyramid,  a faceface with one O(6)Na3W2 square pyramid, and  a faceface with one O(8)Na3W2 square pyramid. The corner-sharing octahedral tilt angles are 61°. In the thirteenth O site, O(13) is bonded to one Na(2), one Na(4), one Na(6), one W(3), and one W(9) atom to form distorted ONa3W2 square pyramids that share  a cornercorner with one O(12)Na4W2 octahedra,  a cornercorner with one O(19)Na4W2 octahedra, corners with two equivalent O(26)Na4W2 octahedra,  a cornercorner with one O(1)Na3W2 square pyramid,  a cornercorner with one O(10)Na3W2 square pyramid,  a cornercorner with one O(14)Na3W2 square pyramid,  a cornercorner with one O(18)Na3W2 square pyramid,  a cornercorner with one O(2)Na3W2 square pyramid,  a cornercorner with one O(20)Na3W2 square pyramid,  a cornercorner with one O(24)Na3W2 square pyramid,  a cornercorner with one O(25)Na3W2 square pyramid,  a cornercorner with one O(27)Na3W2 square pyramid,  a cornercorner with one O(4)Na3W2 square pyramid,  a cornercorner with one O(6)Na3W2 square pyramid, corners with two equivalent O(15)Na3W2 square pyramids, corners with two equivalent O(22)Na3W2 square pyramids,  an edgeedge with one O(17)Na4W2 octahedra,  an edgeedge with one O(16)Na3W2 square pyramid,  an edgeedge with one O(18)Na3W2 square pyramid,  an edgeedge with one O(21)Na3W2 square pyramid,  an edgeedge with one O(24)Na3W2 square pyramid,  a faceface with one O(12)Na4W2 octahedra,  a faceface with one O(19)Na4W2 octahedra,  a faceface with one O(9)Na4W2 octahedra, and  a faceface with one O(8)Na3W2 square pyramid. The corner-sharing octahedral tilt angles range from 1-61°. In the fourteenth O site, O(14) is bonded to one Na(3), one Na(6), one Na(7), one W(2), and one W(6) atom to form distorted ONa3W2 square pyramids that share  a cornercorner with one O(19)Na4W2 octahedra,  a cornercorner with one O(26)Na4W2 octahedra,  a cornercorner with one O(9)Na4W2 octahedra,  a cornercorner with one O(1)Na3W2 square pyramid,  a cornercorner with one O(10)Na3W2 square pyramid,  a cornercorner with one O(13)Na3W2 square pyramid,  a cornercorner with one O(18)Na3W2 square pyramid,  a cornercorner with one O(20)Na3W2 square pyramid,  a cornercorner with one O(21)Na3W2 square pyramid,  a cornercorner with one O(24)Na3W2 square pyramid,  a cornercorner with one O(25)Na3W2 square pyramid,  a cornercorner with one O(6)Na3W2 square pyramid,  a cornercorner with one O(8)Na3W2 square pyramid, corners with two equivalent O(2)Na3W2 square pyramids, corners with two equivalent O(27)Na3W2 square pyramids,  an edgeedge with one O(12)Na4W2 octahedra,  an edgeedge with one O(22)Na3W2 square pyramid,  an edgeedge with one O(23)Na3W2 square pyramid,  an edgeedge with one O(4)Na3W2 square pyramid,  an edgeedge with one O(8)Na3W2 square pyramid,  a faceface with one O(17)Na4W2 octahedra,  a faceface with one O(15)Na3W2 square pyramid,  a faceface with one O(5)Na3W2 square pyramid, and  a faceface with one O(7)Na3W2 square pyramid. The corner-sharing octahedral tilt angles range from 2-61°. In the fifteenth O site, O(15) is bonded to one Na(3), one Na(5), one Na(6), one W(3), and one W(6) atom to form distorted ONa3W2 square pyramids that share  a cornercorner with one O(26)Na4W2 octahedra,  a cornercorner with one O(9)Na4W2 octahedra, corners with two equivalent O(19)Na4W2 octahedra,  a cornercorner with one O(16)Na3W2 square pyramid,  a cornercorner with one O(2)Na3W2 square pyramid,  a cornercorner with one O(20)Na3W2 square pyramid,  a cornercorner with one O(24)Na3W2 square pyramid,  a cornercorner with one O(25)Na3W2 square pyramid,  a cornercorner with one O(4)Na3W2 square pyramid,  a cornercorner with one O(5)Na3W2 square pyramid,  a cornercorner with one O(6)Na3W2 square pyramid,  a cornercorner with one O(8)Na3W2 square pyramid, corners with two equivalent O(13)Na3W2 square pyramids, corners with two equivalent O(23)Na3W2 square pyramids,  an edgeedge with one O(17)Na4W2 octahedra,  an edgeedge with one O(10)Na3W2 square pyramid,  an edgeedge with one O(27)Na3W2 square pyramid,  an edgeedge with one O(7)Na3W2 square pyramid,  an edgeedge with one O(8)Na3W2 square pyramid,  a faceface with one O(12)Na4W2 octahedra,  a faceface with one O(14)Na3W2 square pyramid,  a faceface with one O(18)Na3W2 square pyramid, and  a faceface with one O(22)Na3W2 square pyramid. The corner-sharing octahedral tilt angles range from 1-61°. In the sixteenth O site, O(16) is bonded to one Na(2), one Na(4), one Na(5), one W(4), and one W(5) atom to form distorted ONa3W2 square pyramids that share  a cornercorner with one O(19)Na4W2 octahedra,  a cornercorner with one O(9)Na4W2 octahedra, corners with two equivalent O(17)Na4W2 octahedra,  a cornercorner with one O(1)Na3W2 square pyramid,  a cornercorner with one O(10)Na3W2 square pyramid,  a cornercorner with one O(15)Na3W2 square pyramid,  a cornercorner with one O(2)Na3W2 square pyramid,  a cornercorner with one O(21)Na3W2 square pyramid,  a cornercorner with one O(22)Na3W2 square pyramid,  a cornercorner with one O(23)Na3W2 square pyramid,  a cornercorner with one O(24)Na3W2 square pyramid,  a cornercorner with one O(25)Na3W2 square pyramid,  a cornercorner with one O(4)Na3W2 square pyramid,  a cornercorner with one O(8)Na3W2 square pyramid, corners with two equivalent O(18)Na3W2 square pyramids, corners with two equivalent O(27)Na3W2 square pyramids,  an edgeedge with one O(26)Na4W2 octahedra,  an edgeedge with one O(10)Na3W2 square pyramid,  an edgeedge with one O(13)Na3W2 square pyramid,  an edgeedge with one O(22)Na3W2 square pyramid,  an edgeedge with one O(6)Na3W2 square pyramid,  a faceface with one O(12)Na4W2 octahedra,  a faceface with one O(19)Na4W2 octahedra,  a faceface with one O(9)Na4W2 octahedra, and  a faceface with one O(20)Na3W2 square pyramid. The corner-sharing octahedral tilt angles range from 1-61°. In the seventeenth O site, O(17) is bonded to one Na(1), one Na(2), one Na(3), one Na(6), one W(2), and one W(5) atom to form distorted ONa4W2 octahedra that share  a cornercorner with one O(12)Na4W2 octahedra,  a cornercorner with one O(26)Na4W2 octahedra,  a cornercorner with one O(9)Na4W2 octahedra,  a cornercorner with one O(1)Na3W2 square pyramid,  a cornercorner with one O(18)Na3W2 square pyramid,  a cornercorner with one O(2)Na3W2 square pyramid,  a cornercorner with one O(21)Na3W2 square pyramid,  a cornercorner with one O(23)Na3W2 square pyramid,  a cornercorner with one O(27)Na3W2 square pyramid,  a cornercorner with one O(6)Na3W2 square pyramid,  a cornercorner with one O(8)Na3W2 square pyramid, corners with two equivalent O(16)Na3W2 square pyramids, corners with two equivalent O(22)Na3W2 square pyramids, corners with two equivalent O(24)Na3W2 square pyramids, corners with two equivalent O(7)Na3W2 square pyramids,  an edgeedge with one O(13)Na3W2 square pyramid,  an edgeedge with one O(15)Na3W2 square pyramid,  an edgeedge with one O(25)Na3W2 square pyramid,  an edgeedge with one O(4)Na3W2 square pyramid,  a faceface with one O(12)Na4W2 octahedra,  a faceface with one O(19)Na4W2 octahedra,  a faceface with one O(10)Na3W2 square pyramid,  a faceface with one O(14)Na3W2 square pyramid,  a faceface with one O(2)Na3W2 square pyramid,  a faceface with one O(5)Na3W2 square pyramid,  a faceface with one O(6)Na3W2 square pyramid, and  a faceface with one O(8)Na3W2 square pyramid. The corner-sharing octahedral tilt angles range from 0-61°. In the eighteenth O site, O(18) is bonded to one Na(4), one Na(5), one Na(6), one W(3), and one W(7) atom to form distorted ONa3W2 square pyramids that share  a cornercorner with one O(17)Na4W2 octahedra,  a cornercorner with one O(19)Na4W2 octahedra, corners with two equivalent O(26)Na4W2 octahedra, corners with two equivalent O(9)Na4W2 octahedra,  a cornercorner with one O(1)Na3W2 square pyramid,  a cornercorner with one O(10)Na3W2 square pyramid,  a cornercorner with one O(13)Na3W2 square pyramid,  a cornercorner with one O(14)Na3W2 square pyramid,  a cornercorner with one O(21)Na3W2 square pyramid,  a cornercorner with one O(5)Na3W2 square pyramid, corners with two equivalent O(16)Na3W2 square pyramids, corners with two equivalent O(20)Na3W2 square pyramids, corners with two equivalent O(8)Na3W2 square pyramids,  an edgeedge with one O(19)Na4W2 octahedra,  an edgeedge with one O(13)Na3W2 square pyramid,  an edgeedge with one O(22)Na3W2 square pyramid,  an edgeedge with one O(23)Na3W2 square pyramid,  an edgeedge with one O(25)Na3W2 square pyramid,  a faceface with one O(12)Na4W2 octahedra,  a faceface with one O(15)Na3W2 square pyramid,  a faceface with one O(24)Na3W2 square pyramid, and  a faceface with one O(27)Na3W2 square pyramid. The corner-sharing octahedral tilt angles range from 1-61°. In the nineteenth O site, O(19) is bonded to one Na(2), one Na(4), one Na(5), one Na(6), one W(5), and one W(9) atom to form distorted ONa4W2 octahedra that share  a cornercorner with one O(12)Na4W2 octahedra,  a cornercorner with one O(9)Na4W2 octahedra,  a cornercorner with one O(1)Na3W2 square pyramid,  a cornercorner with one O(13)Na3W2 square pyramid,  a cornercorner with one O(14)Na3W2 square pyramid,  a cornercorner with one O(16)Na3W2 square pyramid,  a cornercorner with one O(18)Na3W2 square pyramid,  a cornercorner with one O(2)Na3W2 square pyramid,  a cornercorner with one O(22)Na3W2 square pyramid,  a cornercorner with one O(23)Na3W2 square pyramid,  a cornercorner with one O(25)Na3W2 square pyramid,  a cornercorner with one O(4)Na3W2 square pyramid, corners with two equivalent O(15)Na3W2 square pyramids, corners with two equivalent O(21)Na3W2 square pyramids, corners with two equivalent O(27)Na3W2 square pyramids, corners with two equivalent O(6)Na3W2 square pyramids,  an edgeedge with one O(18)Na3W2 square pyramid,  an edgeedge with one O(20)Na3W2 square pyramid,  an edgeedge with one O(22)Na3W2 square pyramid,  an edgeedge with one O(8)Na3W2 square pyramid,  a faceface with one O(12)Na4W2 octahedra,  a faceface with one O(17)Na4W2 octahedra,  a faceface with one O(26)Na4W2 octahedra,  a faceface with one O(9)Na4W2 octahedra,  a faceface with one O(10)Na3W2 square pyramid,  a faceface with one O(13)Na3W2 square pyramid,  a faceface with one O(16)Na3W2 square pyramid, and  a faceface with one O(24)Na3W2 square pyramid. The corner-sharing octahedral tilt angles are 61°. In the twentieth O site, O(20) is bonded to one Na(4), one Na(5), one Na(7), one W(4), and one W(8) atom to form distorted ONa3W2 square pyramids that share  a cornercorner with one O(12)Na4W2 octahedra,  a cornercorner with one O(26)Na4W2 octahedra,  a cornercorner with one O(9)Na4W2 octahedra,  a cornercorner with one O(10)Na3W2 square pyramid,  a cornercorner with one O(13)Na3W2 square pyramid,  a cornercorner with one O(14)Na3W2 square pyramid,  a cornercorner with one O(15)Na3W2 square pyramid,  a cornercorner with one O(23)Na3W2 square pyramid,  a cornercorner with one O(24)Na3W2 square pyramid,  a cornercorner with one O(25)Na3W2 square pyramid,  a cornercorner with one O(27)Na3W2 square pyramid,  a cornercorner with one O(4)Na3W2 square pyramid,  a cornercorner with one O(5)Na3W2 square pyramid, corners with two equivalent O(18)Na3W2 square pyramids, corners with two equivalent O(22)Na3W2 square pyramids, corners with two equivalent O(7)Na3W2 square pyramids,  an edgeedge with one O(19)Na4W2 octahedra,  an edgeedge with one O(21)Na3W2 square pyramid,  an edgeedge with one O(23)Na3W2 square pyramid,  an edgeedge with one O(27)Na3W2 square pyramid,  a faceface with one O(26)Na4W2 octahedra,  a faceface with one O(9)Na4W2 octahedra,  a faceface with one O(1)Na3W2 square pyramid, and  a faceface with one O(16)Na3W2 square pyramid. The corner-sharing octahedral tilt angles range from 60-61°. In the twenty-first O site, O(21) is bonded to one Na(1), one Na(4), one Na(7), one W(1), and one W(9) atom to form distorted ONa3W2 square pyramids that share  a cornercorner with one O(12)Na4W2 octahedra,  a cornercorner with one O(17)Na4W2 octahedra,  a cornercorner with one O(26)Na4W2 octahedra, corners with two equivalent O(19)Na4W2 octahedra,  a cornercorner with one O(1)Na3W2 square pyramid,  a cornercorner with one O(10)Na3W2 square pyramid,  a cornercorner with one O(14)Na3W2 square pyramid,  a cornercorner with one O(16)Na3W2 square pyramid,  a cornercorner with one O(18)Na3W2 square pyramid,  a cornercorner with one O(23)Na3W2 square pyramid,  a cornercorner with one O(24)Na3W2 square pyramid,  a cornercorner with one O(25)Na3W2 square pyramid,  a cornercorner with one O(27)Na3W2 square pyramid, corners with two equivalent O(5)Na3W2 square pyramids, corners with two equivalent O(6)Na3W2 square pyramids,  an edgeedge with one O(13)Na3W2 square pyramid,  an edgeedge with one O(2)Na3W2 square pyramid,  an edgeedge with one O(20)Na3W2 square pyramid,  an edgeedge with one O(24)Na3W2 square pyramid,  an edgeedge with one O(25)Na3W2 square pyramid,  an edgeedge with one O(7)Na3W2 square pyramid,  a faceface with one O(26)Na4W2 octahedra,  a faceface with one O(9)Na4W2 octahedra,  a faceface with one O(1)Na3W2 square pyramid, and  a faceface with one O(4)Na3W2 square pyramid. The corner-sharing octahedral tilt angles range from 2-61°. In the twenty-second O site, O(22) is bonded to one Na(2), one Na(5), one Na(6), one W(4), and one W(6) atom to form distorted ONa3W2 square pyramids that share  a cornercorner with one O(19)Na4W2 octahedra,  a cornercorner with one O(26)Na4W2 octahedra, corners with two equivalent O(12)Na4W2 octahedra, corners with two equivalent O(17)Na4W2 octahedra,  a cornercorner with one O(16)Na3W2 square pyramid,  a cornercorner with one O(2)Na3W2 square pyramid,  a cornercorner with one O(23)Na3W2 square pyramid,  a cornercorner with one O(24)Na3W2 square pyramid,  a cornercorner with one O(6)Na3W2 square pyramid,  a cornercorner with one O(7)Na3W2 square pyramid, corners with two equivalent O(13)Na3W2 square pyramids, corners with two equivalent O(20)Na3W2 square pyramids, corners with two equivalent O(8)Na3W2 square pyramids,  an edgeedge with one O(19)Na4W2 octahedra,  an edgeedge with one O(14)Na3W2 square pyramid,  an edgeedge with one O(16)Na3W2 square pyramid,  an edgeedge with one O(18)Na3W2 square pyramid,  an edgeedge with one O(4)Na3W2 square pyramid,  a faceface with one O(9)Na4W2 octahedra,  a faceface with one O(10)Na3W2 square pyramid,  a faceface with one O(15)Na3W2 square pyramid, and  a faceface with one O(27)Na3W2 square pyramid. The corner-sharing octahedral tilt angles range from 2-61°. In the twenty-third O site, O(23) is bonded to one Na(3), one Na(5), one Na(7), one W(7), and one W(8) atom to form distorted ONa3W2 square pyramids that share  a cornercorner with one O(12)Na4W2 octahedra,  a cornercorner with one O(17)Na4W2 octahedra,  a cornercorner with one O(19)Na4W2 octahedra,  a cornercorner with one O(10)Na3W2 square pyramid,  a cornercorner with one O(16)Na3W2 square pyramid,  a cornercorner with one O(2)Na3W2 square pyramid,  a cornercorner with one O(20)Na3W2 square pyramid,  a cornercorner with one O(21)Na3W2 square pyramid,  a cornercorner with one O(22)Na3W2 square pyramid,  a cornercorner with one O(24)Na3W2 square pyramid,  a cornercorner with one O(4)Na3W2 square pyramid,  a cornercorner with one O(6)Na3W2 square pyramid,  a cornercorner with one O(8)Na3W2 square pyramid, corners with two equivalent O(1)Na3W2 square pyramids, corners with two equivalent O(15)Na3W2 square pyramids,  an edgeedge with one O(9)Na4W2 octahedra,  an edgeedge with one O(14)Na3W2 square pyramid,  an edgeedge with one O(18)Na3W2 square pyramid,  an edgeedge with one O(20)Na3W2 square pyramid,  an edgeedge with one O(25)Na3W2 square pyramid,  a faceface with one O(26)Na4W2 octahedra,  a faceface with one O(27)Na3W2 square pyramid,  a faceface with one O(5)Na3W2 square pyramid, and  a faceface with one O(7)Na3W2 square pyramid. The corner-sharing octahedral tilt angles range from 2-61°. In the twenty-fourth O site, O(24) is bonded to one Na(1), one Na(4), one Na(6), one W(7), and one W(9) atom to form distorted ONa3W2 square pyramids that share corners with two equivalent O(17)Na4W2 octahedra, corners with two equivalent O(9)Na4W2 octahedra,  a cornercorner with one O(10)Na3W2 square pyramid,  a cornercorner with one O(13)Na3W2 square pyramid,  a cornercorner with one O(14)Na3W2 square pyramid,  a cornercorner with one O(15)Na3W2 square pyramid,  a cornercorner with one O(16)Na3W2 square pyramid,  a cornercorner with one O(2)Na3W2 square pyramid,  a cornercorner with one O(20)Na3W2 square pyramid,  a cornercorner with one O(21)Na3W2 square pyramid,  a cornercorner with one O(22)Na3W2 square pyramid,  a cornercorner with one O(23)Na3W2 square pyramid,  a cornercorner with one O(4)Na3W2 square pyramid,  a cornercorner with one O(6)Na3W2 square pyramid,  a cornercorner with one O(7)Na3W2 square pyramid,  a cornercorner with one O(8)Na3W2 square pyramid,  an edgeedge with one O(12)Na4W2 octahedra,  an edgeedge with one O(1)Na3W2 square pyramid,  an edgeedge with one O(13)Na3W2 square pyramid,  an edgeedge with one O(21)Na3W2 square pyramid,  an edgeedge with one O(27)Na3W2 square pyramid,  an edgeedge with one O(5)Na3W2 square pyramid,  a faceface with one O(19)Na4W2 octahedra,  a faceface with one O(26)Na4W2 octahedra,  a faceface with one O(18)Na3W2 square pyramid, and  a faceface with one O(25)Na3W2 square pyramid. The corner-sharing octahedral tilt angles range from 2-61°. In the twenty-fifth O site, O(25) is bonded to one Na(1), one Na(3), one Na(4), one W(1), and one W(7) atom to form distorted ONa3W2 square pyramids that share  a cornercorner with one O(19)Na4W2 octahedra,  a cornercorner with one O(9)Na4W2 octahedra, corners with two equivalent O(12)Na4W2 octahedra,  a cornercorner with one O(10)Na3W2 square pyramid,  a cornercorner with one O(13)Na3W2 square pyramid,  a cornercorner with one O(14)Na3W2 square pyramid,  a cornercorner with one O(15)Na3W2 square pyramid,  a cornercorner with one O(16)Na3W2 square pyramid,  a cornercorner with one O(2)Na3W2 square pyramid,  a cornercorner with one O(20)Na3W2 square pyramid,  a cornercorner with one O(21)Na3W2 square pyramid,  a cornercorner with one O(27)Na3W2 square pyramid,  a cornercorner with one O(8)Na3W2 square pyramid, corners with two equivalent O(4)Na3W2 square pyramids, corners with two equivalent O(7)Na3W2 square pyramids,  an edgeedge with one O(17)Na4W2 octahedra,  an edgeedge with one O(26)Na4W2 octahedra,  an edgeedge with one O(18)Na3W2 square pyramid,  an edgeedge with one O(2)Na3W2 square pyramid,  an edgeedge with one O(21)Na3W2 square pyramid,  an edgeedge with one O(23)Na3W2 square pyramid,  a faceface with one O(1)Na3W2 square pyramid,  a faceface with one O(24)Na3W2 square pyramid,  a faceface with one O(5)Na3W2 square pyramid, and  a faceface with one O(6)Na3W2 square pyramid. The corner-sharing octahedral tilt angles range from 59-61°. In the twenty-sixth O site, O(26) is bonded to one Na(1), one Na(4), one Na(5), one Na(7), one W(8), and one W(9) atom to form distorted ONa4W2 octahedra that share  a cornercorner with one O(12)Na4W2 octahedra,  a cornercorner with one O(17)Na4W2 octahedra,  a cornercorner with one O(9)Na4W2 octahedra,  a cornercorner with one O(1)Na3W2 square pyramid,  a cornercorner with one O(14)Na3W2 square pyramid,  a cornercorner with one O(15)Na3W2 square pyramid,  a cornercorner with one O(2)Na3W2 square pyramid,  a cornercorner with one O(20)Na3W2 square pyramid,  a cornercorner with one O(21)Na3W2 square pyramid,  a cornercorner with one O(22)Na3W2 square pyramid,  a cornercorner with one O(6)Na3W2 square pyramid, corners with two equivalent O(10)Na3W2 square pyramids, corners with two equivalent O(13)Na3W2 square pyramids, corners with two equivalent O(18)Na3W2 square pyramids, corners with two equivalent O(5)Na3W2 square pyramids,  an edgeedge with one O(16)Na3W2 square pyramid,  an edgeedge with one O(25)Na3W2 square pyramid,  an edgeedge with one O(27)Na3W2 square pyramid,  an edgeedge with one O(4)Na3W2 square pyramid,  a faceface with one O(19)Na4W2 octahedra,  a faceface with one O(9)Na4W2 octahedra,  a faceface with one O(1)Na3W2 square pyramid,  a faceface with one O(20)Na3W2 square pyramid,  a faceface with one O(21)Na3W2 square pyramid,  a faceface with one O(23)Na3W2 square pyramid,  a faceface with one O(24)Na3W2 square pyramid, and  a faceface with one O(7)Na3W2 square pyramid. The corner-sharing octahedral tilt angles range from 0-61°. In the twenty-seventh O site, O(27) is bonded to one Na(5), one Na(6), one Na(7), one W(4), and one W(7) atom to form distorted ONa3W2 square pyramids that share  a cornercorner with one O(12)Na4W2 octahedra,  a cornercorner with one O(17)Na4W2 octahedra, corners with two equivalent O(19)Na4W2 octahedra,  a cornercorner with one O(1)Na3W2 square pyramid,  a cornercorner with one O(10)Na3W2 square pyramid,  a cornercorner with one O(13)Na3W2 square pyramid,  a cornercorner with one O(20)Na3W2 square pyramid,  a cornercorner with one O(21)Na3W2 square pyramid,  a cornercorner with one O(25)Na3W2 square pyramid,  a cornercorner with one O(4)Na3W2 square pyramid,  a cornercorner with one O(7)Na3W2 square pyramid,  a cornercorner with one O(8)Na3W2 square pyramid, corners with two equivalent O(14)Na3W2 square pyramids, corners with two equivalent O(16)Na3W2 square pyramids,  an edgeedge with one O(26)Na4W2 octahedra,  an edgeedge with one O(15)Na3W2 square pyramid,  an edgeedge with one O(20)Na3W2 square pyramid,  an edgeedge with one O(24)Na3W2 square pyramid,  an edgeedge with one O(5)Na3W2 square pyramid,  a faceface with one O(9)Na4W2 octahedra,  a faceface with one O(18)Na3W2 square pyramid,  a faceface with one O(22)Na3W2 square pyramid, and  a faceface with one O(23)Na3W2 square pyramid. The corner-sharing octahedral tilt angles range from 1-61°.