Na2CdO2 is Ilmenite-like structured and crystallizes in the monoclinic C2 space group. There are eight inequivalent Na sites. In the first Na site, Na(1) is bonded to one O(1), one O(2), one O(4), and one O(5) atom to form distorted NaO4 tetrahedra that share  a cornercorner with one Na(1)O4 tetrahedra,  a cornercorner with one Na(4)O4 tetrahedra,  a cornercorner with one Na(5)O4 trigonal pyramid,  a cornercorner with one Na(6)O4 trigonal pyramid,  a cornercorner with one Cd(1)O4 trigonal pyramid,  a cornercorner with one Cd(4)O4 trigonal pyramid, corners with two equivalent Na(2)O4 trigonal pyramids, corners with two equivalent Na(3)O4 trigonal pyramids,  an edgeedge with one Na(4)O4 tetrahedra,  an edgeedge with one Cd(3)O4 tetrahedra, and edges with two equivalent Na(8)O4 trigonal pyramids. In the second Na site, Na(2) is bonded to one O(1), one O(3), one O(5), and one O(8) atom to form distorted NaO4 trigonal pyramids that share  a cornercorner with one Cd(2)O4 tetrahedra,  a cornercorner with one Cd(3)O4 tetrahedra, corners with two equivalent Na(1)O4 tetrahedra,  a cornercorner with one Na(2)O4 trigonal pyramid,  a cornercorner with one Na(3)O4 trigonal pyramid,  a cornercorner with one Na(8)O4 trigonal pyramid, corners with two equivalent Na(6)O4 trigonal pyramids, corners with two equivalent Cd(4)O4 trigonal pyramids,  an edgeedge with one Na(4)O4 tetrahedra,  an edgeedge with one Cd(3)O4 tetrahedra, and edges with two equivalent Na(5)O4 trigonal pyramids. In the third Na site, Na(3) is bonded to one O(2), one O(5), one O(7), and one O(9) atom to form NaO4 trigonal pyramids that share  a cornercorner with one Cd(2)O4 tetrahedra,  a cornercorner with one Cd(3)O4 tetrahedra, corners with two equivalent Na(1)O4 tetrahedra,  a cornercorner with one Na(2)O4 trigonal pyramid,  a cornercorner with one Na(3)O4 trigonal pyramid,  a cornercorner with one Na(8)O4 trigonal pyramid, corners with two equivalent Na(6)O4 trigonal pyramids, corners with two equivalent Cd(4)O4 trigonal pyramids,  an edgeedge with one Cd(2)O4 tetrahedra,  an edgeedge with one Na(5)O4 trigonal pyramid,  an edgeedge with one Na(8)O4 trigonal pyramid, and  an edgeedge with one Cd(1)O4 trigonal pyramid. In the fourth Na site, Na(4) is bonded to one O(1), one O(4), one O(6), and one O(8) atom to form distorted NaO4 tetrahedra that share  a cornercorner with one Na(1)O4 tetrahedra,  a cornercorner with one Na(4)O4 tetrahedra, corners with two equivalent Cd(2)O4 tetrahedra, corners with two equivalent Cd(3)O4 tetrahedra,  a cornercorner with one Na(5)O4 trigonal pyramid,  a cornercorner with one Na(6)O4 trigonal pyramid,  a cornercorner with one Cd(1)O4 trigonal pyramid,  a cornercorner with one Cd(4)O4 trigonal pyramid, corners with two equivalent Na(8)O4 trigonal pyramids,  an edgeedge with one Na(1)O4 tetrahedra,  an edgeedge with one Na(2)O4 trigonal pyramid, and  an edgeedge with one Na(6)O4 trigonal pyramid. In the fifth Na site, Na(5) is bonded to one O(3), one O(5), one O(7), and one O(8) atom to form distorted NaO4 trigonal pyramids that share  a cornercorner with one Na(1)O4 tetrahedra,  a cornercorner with one Na(4)O4 tetrahedra, corners with two equivalent Cd(2)O4 tetrahedra, corners with two equivalent Cd(3)O4 tetrahedra,  a cornercorner with one Na(5)O4 trigonal pyramid,  a cornercorner with one Na(6)O4 trigonal pyramid,  a cornercorner with one Cd(1)O4 trigonal pyramid,  a cornercorner with one Cd(4)O4 trigonal pyramid, corners with two equivalent Na(8)O4 trigonal pyramids,  an edgeedge with one Na(3)O4 trigonal pyramid,  an edgeedge with one Cd(4)O4 trigonal pyramid, and edges with two equivalent Na(2)O4 trigonal pyramids. In the sixth Na site, Na(6) is bonded to one O(1), one O(6), one O(8), and one O(9) atom to form distorted NaO4 trigonal pyramids that share  a cornercorner with one Na(1)O4 tetrahedra,  a cornercorner with one Na(4)O4 tetrahedra,  a cornercorner with one Na(5)O4 trigonal pyramid,  a cornercorner with one Na(6)O4 trigonal pyramid,  a cornercorner with one Cd(1)O4 trigonal pyramid,  a cornercorner with one Cd(4)O4 trigonal pyramid, corners with two equivalent Na(2)O4 trigonal pyramids, corners with two equivalent Na(3)O4 trigonal pyramids,  an edgeedge with one Na(4)O4 tetrahedra,  an edgeedge with one Cd(3)O4 tetrahedra, and edges with two equivalent Cd(2)O4 tetrahedra. In the seventh Na site, Na(7) is bonded in a distorted rectangular see-saw-like geometry to one O(1), one O(10), one O(2), and one O(6) atom. In the eighth Na site, Na(8) is bonded to one O(2), one O(4), one O(5), and one O(7) atom to form distorted NaO4 trigonal pyramids that share  a cornercorner with one Cd(2)O4 tetrahedra,  a cornercorner with one Cd(3)O4 tetrahedra, corners with two equivalent Na(4)O4 tetrahedra,  a cornercorner with one Na(2)O4 trigonal pyramid,  a cornercorner with one Na(3)O4 trigonal pyramid,  a cornercorner with one Na(8)O4 trigonal pyramid, corners with two equivalent Na(5)O4 trigonal pyramids, corners with two equivalent Cd(1)O4 trigonal pyramids, edges with two equivalent Na(1)O4 tetrahedra,  an edgeedge with one Na(3)O4 trigonal pyramid, and  an edgeedge with one Cd(4)O4 trigonal pyramid. There are four inequivalent Cd sites. In the first Cd site, Cd(1) is bonded to one O(10), one O(2), one O(6), and one O(7) atom to form distorted CdO4 trigonal pyramids that share  a cornercorner with one Na(1)O4 tetrahedra,  a cornercorner with one Na(4)O4 tetrahedra, corners with two equivalent Cd(2)O4 tetrahedra, corners with two equivalent Cd(3)O4 tetrahedra,  a cornercorner with one Na(5)O4 trigonal pyramid,  a cornercorner with one Na(6)O4 trigonal pyramid,  a cornercorner with one Cd(1)O4 trigonal pyramid,  a cornercorner with one Cd(4)O4 trigonal pyramid, corners with two equivalent Na(8)O4 trigonal pyramids,  an edgeedge with one Na(3)O4 trigonal pyramid, and  an edgeedge with one Cd(4)O4 trigonal pyramid. In the second Cd site, Cd(2) is bonded to one O(6), one O(7), one O(8), and one O(9) atom to form distorted CdO4 tetrahedra that share  a cornercorner with one Cd(2)O4 tetrahedra,  a cornercorner with one Cd(3)O4 tetrahedra, corners with two equivalent Na(4)O4 tetrahedra,  a cornercorner with one Na(2)O4 trigonal pyramid,  a cornercorner with one Na(3)O4 trigonal pyramid,  a cornercorner with one Na(8)O4 trigonal pyramid, corners with two equivalent Na(5)O4 trigonal pyramids, corners with two equivalent Cd(1)O4 trigonal pyramids,  an edgeedge with one Na(3)O4 trigonal pyramid,  an edgeedge with one Cd(4)O4 trigonal pyramid, and edges with two equivalent Na(6)O4 trigonal pyramids. In the third Cd site, Cd(3) is bonded to one O(1), one O(2), one O(3), and one O(6) atom to form CdO4 tetrahedra that share  a cornercorner with one Cd(2)O4 tetrahedra,  a cornercorner with one Cd(3)O4 tetrahedra, corners with two equivalent Na(4)O4 tetrahedra,  a cornercorner with one Na(2)O4 trigonal pyramid,  a cornercorner with one Na(3)O4 trigonal pyramid,  a cornercorner with one Na(8)O4 trigonal pyramid, corners with two equivalent Na(5)O4 trigonal pyramids, corners with two equivalent Cd(1)O4 trigonal pyramids,  an edgeedge with one Na(1)O4 tetrahedra,  an edgeedge with one Na(2)O4 trigonal pyramid, and  an edgeedge with one Na(6)O4 trigonal pyramid. In the fourth Cd site, Cd(4) is bonded to one O(10), one O(5), one O(7), and one O(8) atom to form distorted CdO4 trigonal pyramids that share  a cornercorner with one Na(1)O4 tetrahedra,  a cornercorner with one Na(4)O4 tetrahedra,  a cornercorner with one Na(5)O4 trigonal pyramid,  a cornercorner with one Na(6)O4 trigonal pyramid,  a cornercorner with one Cd(1)O4 trigonal pyramid,  a cornercorner with one Cd(4)O4 trigonal pyramid, corners with two equivalent Na(2)O4 trigonal pyramids, corners with two equivalent Na(3)O4 trigonal pyramids,  an edgeedge with one Cd(2)O4 tetrahedra,  an edgeedge with one Na(5)O4 trigonal pyramid,  an edgeedge with one Na(8)O4 trigonal pyramid, and  an edgeedge with one Cd(1)O4 trigonal pyramid. There are ten inequivalent O sites. In the first O site, O(1) is bonded to one Na(1), one Na(2), one Na(4), one Na(6), one Na(7), and one Cd(3) atom to form distorted ONa5Cd octahedra that share  a cornercorner with one O(10)Na2Cd4 octahedra,  a cornercorner with one O(2)Na4Cd2 octahedra,  a cornercorner with one O(8)Na4Cd2 octahedra,  a cornercorner with one O(9)Na4Cd2 octahedra, corners with two equivalent O(5)Na5Cd octahedra,  an edgeedge with one O(2)Na4Cd2 octahedra,  an edgeedge with one O(3)Na4Cd2 octahedra,  an edgeedge with one O(8)Na4Cd2 octahedra,  an edgeedge with one O(4)Na6 octahedra, and edges with two equivalent O(6)Na3Cd3 octahedra. The corner-sharing octahedral tilt angles range from 51-55°. In the second O site, O(2) is bonded to one Na(1), one Na(3), one Na(7), one Na(8), one Cd(1), and one Cd(3) atom to form ONa4Cd2 octahedra that share  a cornercorner with one O(6)Na3Cd3 octahedra,  a cornercorner with one O(3)Na4Cd2 octahedra,  a cornercorner with one O(9)Na4Cd2 octahedra,  a cornercorner with one O(1)Na5Cd octahedra,  a cornercorner with one O(5)Na5Cd octahedra,  a cornercorner with one O(7)Na3Cd3 pentagonal pyramid,  an edgeedge with one O(10)Na2Cd4 octahedra,  an edgeedge with one O(6)Na3Cd3 octahedra,  an edgeedge with one O(1)Na5Cd octahedra,  an edgeedge with one O(5)Na5Cd octahedra,  an edgeedge with one O(4)Na6 octahedra, and  an edgeedge with one O(7)Na3Cd3 pentagonal pyramid. The corner-sharing octahedral tilt angles range from 52-56°. In the third O site, O(3) is bonded to two equivalent Na(2), two equivalent Na(5), and two equivalent Cd(3) atoms to form distorted ONa4Cd2 octahedra that share corners with two equivalent O(6)Na3Cd3 octahedra, corners with two equivalent O(2)Na4Cd2 octahedra, corners with two equivalent O(7)Na3Cd3 pentagonal pyramids, edges with two equivalent O(8)Na4Cd2 octahedra, edges with two equivalent O(1)Na5Cd octahedra, and edges with two equivalent O(5)Na5Cd octahedra. The corner-sharing octahedral tilt angles range from 56-62°. In the fourth O site, O(4) is bonded to two equivalent Na(1), two equivalent Na(4), and two equivalent Na(8) atoms to form distorted ONa6 octahedra that share corners with two equivalent O(6)Na3Cd3 octahedra, corners with two equivalent O(8)Na4Cd2 octahedra, corners with two equivalent O(7)Na3Cd3 pentagonal pyramids, edges with two equivalent O(2)Na4Cd2 octahedra, edges with two equivalent O(1)Na5Cd octahedra, and edges with two equivalent O(5)Na5Cd octahedra. The corner-sharing octahedral tilt angles range from 54-59°. In the fifth O site, O(5) is bonded to one Na(1), one Na(2), one Na(3), one Na(5), one Na(8), and one Cd(4) atom to form distorted ONa5Cd octahedra that share  a cornercorner with one O(10)Na2Cd4 octahedra,  a cornercorner with one O(2)Na4Cd2 octahedra,  a cornercorner with one O(8)Na4Cd2 octahedra,  a cornercorner with one O(9)Na4Cd2 octahedra, corners with two equivalent O(1)Na5Cd octahedra,  an edgeedge with one O(2)Na4Cd2 octahedra,  an edgeedge with one O(3)Na4Cd2 octahedra,  an edgeedge with one O(8)Na4Cd2 octahedra,  an edgeedge with one O(4)Na6 octahedra, and edges with two equivalent O(7)Na3Cd3 pentagonal pyramids. The corner-sharing octahedral tilt angles range from 51-55°. In the sixth O site, O(6) is bonded to one Na(4), one Na(6), one Na(7), one Cd(1), one Cd(2), and one Cd(3) atom to form distorted ONa3Cd3 octahedra that share  a cornercorner with one O(2)Na4Cd2 octahedra,  a cornercorner with one O(3)Na4Cd2 octahedra,  a cornercorner with one O(8)Na4Cd2 octahedra,  a cornercorner with one O(4)Na6 octahedra, corners with two equivalent O(7)Na3Cd3 pentagonal pyramids,  an edgeedge with one O(10)Na2Cd4 octahedra,  an edgeedge with one O(2)Na4Cd2 octahedra,  an edgeedge with one O(8)Na4Cd2 octahedra,  an edgeedge with one O(9)Na4Cd2 octahedra, and edges with two equivalent O(1)Na5Cd octahedra. The corner-sharing octahedral tilt angles range from 54-62°. In the seventh O site, O(7) is bonded to one Na(3), one Na(5), one Na(8), one Cd(1), one Cd(2), and one Cd(4) atom to form distorted ONa3Cd3 pentagonal pyramids that share  a cornercorner with one O(2)Na4Cd2 octahedra,  a cornercorner with one O(3)Na4Cd2 octahedra,  a cornercorner with one O(8)Na4Cd2 octahedra,  a cornercorner with one O(4)Na6 octahedra, corners with two equivalent O(6)Na3Cd3 octahedra,  an edgeedge with one O(10)Na2Cd4 octahedra,  an edgeedge with one O(2)Na4Cd2 octahedra,  an edgeedge with one O(8)Na4Cd2 octahedra,  an edgeedge with one O(9)Na4Cd2 octahedra, and edges with two equivalent O(5)Na5Cd octahedra. The corner-sharing octahedral tilt angles range from 52-58°. In the eighth O site, O(8) is bonded to one Na(2), one Na(4), one Na(5), one Na(6), one Cd(2), and one Cd(4) atom to form ONa4Cd2 octahedra that share  a cornercorner with one O(10)Na2Cd4 octahedra,  a cornercorner with one O(6)Na3Cd3 octahedra,  a cornercorner with one O(1)Na5Cd octahedra,  a cornercorner with one O(5)Na5Cd octahedra,  a cornercorner with one O(4)Na6 octahedra,  a cornercorner with one O(7)Na3Cd3 pentagonal pyramid,  an edgeedge with one O(6)Na3Cd3 octahedra,  an edgeedge with one O(3)Na4Cd2 octahedra,  an edgeedge with one O(9)Na4Cd2 octahedra,  an edgeedge with one O(1)Na5Cd octahedra,  an edgeedge with one O(5)Na5Cd octahedra, and  an edgeedge with one O(7)Na3Cd3 pentagonal pyramid. The corner-sharing octahedral tilt angles range from 51-58°. In the ninth O site, O(9) is bonded to two equivalent Na(3), two equivalent Na(6), and two equivalent Cd(2) atoms to form distorted ONa4Cd2 octahedra that share corners with two equivalent O(2)Na4Cd2 octahedra, corners with two equivalent O(1)Na5Cd octahedra, corners with two equivalent O(5)Na5Cd octahedra, edges with two equivalent O(6)Na3Cd3 octahedra, edges with two equivalent O(8)Na4Cd2 octahedra, and edges with two equivalent O(7)Na3Cd3 pentagonal pyramids. The corner-sharing octahedral tilt angles range from 52-56°. In the tenth O site, O(10) is bonded to two equivalent Na(7), two equivalent Cd(1), and two equivalent Cd(4) atoms to form distorted ONa2Cd4 octahedra that share corners with two equivalent O(8)Na4Cd2 octahedra, corners with two equivalent O(1)Na5Cd octahedra, corners with two equivalent O(5)Na5Cd octahedra, edges with two equivalent O(6)Na3Cd3 octahedra, edges with two equivalent O(2)Na4Cd2 octahedra, and edges with two equivalent O(7)Na3Cd3 pentagonal pyramids. The corner-sharing octahedral tilt angles range from 51-58°.
Na2CdO2 is Ilmenite-like structured and crystallizes in the monoclinic C2 space group. There are eight inequivalent Na sites. In the first Na site, Na(1) is bonded to one O(1), one O(2), one O(4), and one O(5) atom to form distorted NaO4 tetrahedra that share  a cornercorner with one Na(1)O4 tetrahedra,  a cornercorner with one Na(4)O4 tetrahedra,  a cornercorner with one Na(5)O4 trigonal pyramid,  a cornercorner with one Na(6)O4 trigonal pyramid,  a cornercorner with one Cd(1)O4 trigonal pyramid,  a cornercorner with one Cd(4)O4 trigonal pyramid, corners with two equivalent Na(2)O4 trigonal pyramids, corners with two equivalent Na(3)O4 trigonal pyramids,  an edgeedge with one Na(4)O4 tetrahedra,  an edgeedge with one Cd(3)O4 tetrahedra, and edges with two equivalent Na(8)O4 trigonal pyramids. The Na(1)-O(1) bond length is 2.32 Å. The Na(1)-O(2) bond length is 2.43 Å. The Na(1)-O(4) bond length is 2.28 Å. The Na(1)-O(5) bond length is 2.28 Å. In the second Na site, Na(2) is bonded to one O(1), one O(3), one O(5), and one O(8) atom to form distorted NaO4 trigonal pyramids that share  a cornercorner with one Cd(2)O4 tetrahedra,  a cornercorner with one Cd(3)O4 tetrahedra, corners with two equivalent Na(1)O4 tetrahedra,  a cornercorner with one Na(2)O4 trigonal pyramid,  a cornercorner with one Na(3)O4 trigonal pyramid,  a cornercorner with one Na(8)O4 trigonal pyramid, corners with two equivalent Na(6)O4 trigonal pyramids, corners with two equivalent Cd(4)O4 trigonal pyramids,  an edgeedge with one Na(4)O4 tetrahedra,  an edgeedge with one Cd(3)O4 tetrahedra, and edges with two equivalent Na(5)O4 trigonal pyramids. The Na(2)-O(1) bond length is 2.30 Å. The Na(2)-O(3) bond length is 2.42 Å. The Na(2)-O(5) bond length is 2.25 Å. The Na(2)-O(8) bond length is 2.33 Å. In the third Na site, Na(3) is bonded to one O(2), one O(5), one O(7), and one O(9) atom to form NaO4 trigonal pyramids that share  a cornercorner with one Cd(2)O4 tetrahedra,  a cornercorner with one Cd(3)O4 tetrahedra, corners with two equivalent Na(1)O4 tetrahedra,  a cornercorner with one Na(2)O4 trigonal pyramid,  a cornercorner with one Na(3)O4 trigonal pyramid,  a cornercorner with one Na(8)O4 trigonal pyramid, corners with two equivalent Na(6)O4 trigonal pyramids, corners with two equivalent Cd(4)O4 trigonal pyramids,  an edgeedge with one Cd(2)O4 tetrahedra,  an edgeedge with one Na(5)O4 trigonal pyramid,  an edgeedge with one Na(8)O4 trigonal pyramid, and  an edgeedge with one Cd(1)O4 trigonal pyramid. The Na(3)-O(2) bond length is 2.35 Å. The Na(3)-O(5) bond length is 2.28 Å. The Na(3)-O(7) bond length is 2.41 Å. The Na(3)-O(9) bond length is 2.31 Å. In the fourth Na site, Na(4) is bonded to one O(1), one O(4), one O(6), and one O(8) atom to form distorted NaO4 tetrahedra that share  a cornercorner with one Na(1)O4 tetrahedra,  a cornercorner with one Na(4)O4 tetrahedra, corners with two equivalent Cd(2)O4 tetrahedra, corners with two equivalent Cd(3)O4 tetrahedra,  a cornercorner with one Na(5)O4 trigonal pyramid,  a cornercorner with one Na(6)O4 trigonal pyramid,  a cornercorner with one Cd(1)O4 trigonal pyramid,  a cornercorner with one Cd(4)O4 trigonal pyramid, corners with two equivalent Na(8)O4 trigonal pyramids,  an edgeedge with one Na(1)O4 tetrahedra,  an edgeedge with one Na(2)O4 trigonal pyramid, and  an edgeedge with one Na(6)O4 trigonal pyramid. The Na(4)-O(1) bond length is 2.33 Å. The Na(4)-O(4) bond length is 2.22 Å. The Na(4)-O(6) bond length is 2.48 Å. The Na(4)-O(8) bond length is 2.36 Å. In the fifth Na site, Na(5) is bonded to one O(3), one O(5), one O(7), and one O(8) atom to form distorted NaO4 trigonal pyramids that share  a cornercorner with one Na(1)O4 tetrahedra,  a cornercorner with one Na(4)O4 tetrahedra, corners with two equivalent Cd(2)O4 tetrahedra, corners with two equivalent Cd(3)O4 tetrahedra,  a cornercorner with one Na(5)O4 trigonal pyramid,  a cornercorner with one Na(6)O4 trigonal pyramid,  a cornercorner with one Cd(1)O4 trigonal pyramid,  a cornercorner with one Cd(4)O4 trigonal pyramid, corners with two equivalent Na(8)O4 trigonal pyramids,  an edgeedge with one Na(3)O4 trigonal pyramid,  an edgeedge with one Cd(4)O4 trigonal pyramid, and edges with two equivalent Na(2)O4 trigonal pyramids. The Na(5)-O(3) bond length is 2.34 Å. The Na(5)-O(5) bond length is 2.34 Å. The Na(5)-O(7) bond length is 2.31 Å. The Na(5)-O(8) bond length is 2.37 Å. In the sixth Na site, Na(6) is bonded to one O(1), one O(6), one O(8), and one O(9) atom to form distorted NaO4 trigonal pyramids that share  a cornercorner with one Na(1)O4 tetrahedra,  a cornercorner with one Na(4)O4 tetrahedra,  a cornercorner with one Na(5)O4 trigonal pyramid,  a cornercorner with one Na(6)O4 trigonal pyramid,  a cornercorner with one Cd(1)O4 trigonal pyramid,  a cornercorner with one Cd(4)O4 trigonal pyramid, corners with two equivalent Na(2)O4 trigonal pyramids, corners with two equivalent Na(3)O4 trigonal pyramids,  an edgeedge with one Na(4)O4 tetrahedra,  an edgeedge with one Cd(3)O4 tetrahedra, and edges with two equivalent Cd(2)O4 tetrahedra. The Na(6)-O(1) bond length is 2.22 Å. The Na(6)-O(6) bond length is 2.46 Å. The Na(6)-O(8) bond length is 2.31 Å. The Na(6)-O(9) bond length is 2.33 Å. In the seventh Na site, Na(7) is bonded in a distorted rectangular see-saw-like geometry to one O(1), one O(10), one O(2), and one O(6) atom. The Na(7)-O(1) bond length is 2.22 Å. The Na(7)-O(10) bond length is 2.39 Å. The Na(7)-O(2) bond length is 2.33 Å. The Na(7)-O(6) bond length is 2.42 Å. In the eighth Na site, Na(8) is bonded to one O(2), one O(4), one O(5), and one O(7) atom to form distorted NaO4 trigonal pyramids that share  a cornercorner with one Cd(2)O4 tetrahedra,  a cornercorner with one Cd(3)O4 tetrahedra, corners with two equivalent Na(4)O4 tetrahedra,  a cornercorner with one Na(2)O4 trigonal pyramid,  a cornercorner with one Na(3)O4 trigonal pyramid,  a cornercorner with one Na(8)O4 trigonal pyramid, corners with two equivalent Na(5)O4 trigonal pyramids, corners with two equivalent Cd(1)O4 trigonal pyramids, edges with two equivalent Na(1)O4 tetrahedra,  an edgeedge with one Na(3)O4 trigonal pyramid, and  an edgeedge with one Cd(4)O4 trigonal pyramid. The Na(8)-O(2) bond length is 2.37 Å. The Na(8)-O(4) bond length is 2.25 Å. The Na(8)-O(5) bond length is 2.38 Å. The Na(8)-O(7) bond length is 2.36 Å. There are four inequivalent Cd sites. In the first Cd site, Cd(1) is bonded to one O(10), one O(2), one O(6), and one O(7) atom to form distorted CdO4 trigonal pyramids that share  a cornercorner with one Na(1)O4 tetrahedra,  a cornercorner with one Na(4)O4 tetrahedra, corners with two equivalent Cd(2)O4 tetrahedra, corners with two equivalent Cd(3)O4 tetrahedra,  a cornercorner with one Na(5)O4 trigonal pyramid,  a cornercorner with one Na(6)O4 trigonal pyramid,  a cornercorner with one Cd(1)O4 trigonal pyramid,  a cornercorner with one Cd(4)O4 trigonal pyramid, corners with two equivalent Na(8)O4 trigonal pyramids,  an edgeedge with one Na(3)O4 trigonal pyramid, and  an edgeedge with one Cd(4)O4 trigonal pyramid. The Cd(1)-O(10) bond length is 2.40 Å. The Cd(1)-O(2) bond length is 2.18 Å. The Cd(1)-O(6) bond length is 2.19 Å. The Cd(1)-O(7) bond length is 2.25 Å. In the second Cd site, Cd(2) is bonded to one O(6), one O(7), one O(8), and one O(9) atom to form distorted CdO4 tetrahedra that share  a cornercorner with one Cd(2)O4 tetrahedra,  a cornercorner with one Cd(3)O4 tetrahedra, corners with two equivalent Na(4)O4 tetrahedra,  a cornercorner with one Na(2)O4 trigonal pyramid,  a cornercorner with one Na(3)O4 trigonal pyramid,  a cornercorner with one Na(8)O4 trigonal pyramid, corners with two equivalent Na(5)O4 trigonal pyramids, corners with two equivalent Cd(1)O4 trigonal pyramids,  an edgeedge with one Na(3)O4 trigonal pyramid,  an edgeedge with one Cd(4)O4 trigonal pyramid, and edges with two equivalent Na(6)O4 trigonal pyramids. The Cd(2)-O(6) bond length is 2.22 Å. The Cd(2)-O(7) bond length is 2.30 Å. The Cd(2)-O(8) bond length is 2.21 Å. The Cd(2)-O(9) bond length is 2.25 Å. In the third Cd site, Cd(3) is bonded to one O(1), one O(2), one O(3), and one O(6) atom to form CdO4 tetrahedra that share  a cornercorner with one Cd(2)O4 tetrahedra,  a cornercorner with one Cd(3)O4 tetrahedra, corners with two equivalent Na(4)O4 tetrahedra,  a cornercorner with one Na(2)O4 trigonal pyramid,  a cornercorner with one Na(3)O4 trigonal pyramid,  a cornercorner with one Na(8)O4 trigonal pyramid, corners with two equivalent Na(5)O4 trigonal pyramids, corners with two equivalent Cd(1)O4 trigonal pyramids,  an edgeedge with one Na(1)O4 tetrahedra,  an edgeedge with one Na(2)O4 trigonal pyramid, and  an edgeedge with one Na(6)O4 trigonal pyramid. The Cd(3)-O(1) bond length is 2.19 Å. The Cd(3)-O(2) bond length is 2.22 Å. The Cd(3)-O(3) bond length is 2.18 Å. The Cd(3)-O(6) bond length is 2.35 Å. In the fourth Cd site, Cd(4) is bonded to one O(10), one O(5), one O(7), and one O(8) atom to form distorted CdO4 trigonal pyramids that share  a cornercorner with one Na(1)O4 tetrahedra,  a cornercorner with one Na(4)O4 tetrahedra,  a cornercorner with one Na(5)O4 trigonal pyramid,  a cornercorner with one Na(6)O4 trigonal pyramid,  a cornercorner with one Cd(1)O4 trigonal pyramid,  a cornercorner with one Cd(4)O4 trigonal pyramid, corners with two equivalent Na(2)O4 trigonal pyramids, corners with two equivalent Na(3)O4 trigonal pyramids,  an edgeedge with one Cd(2)O4 tetrahedra,  an edgeedge with one Na(5)O4 trigonal pyramid,  an edgeedge with one Na(8)O4 trigonal pyramid, and  an edgeedge with one Cd(1)O4 trigonal pyramid. The Cd(4)-O(10) bond length is 2.27 Å. The Cd(4)-O(5) bond length is 2.14 Å. The Cd(4)-O(7) bond length is 2.34 Å. The Cd(4)-O(8) bond length is 2.25 Å. There are ten inequivalent O sites. In the first O site, O(1) is bonded to one Na(1), one Na(2), one Na(4), one Na(6), one Na(7), and one Cd(3) atom to form distorted ONa5Cd octahedra that share  a cornercorner with one O(10)Na2Cd4 octahedra,  a cornercorner with one O(2)Na4Cd2 octahedra,  a cornercorner with one O(8)Na4Cd2 octahedra,  a cornercorner with one O(9)Na4Cd2 octahedra, corners with two equivalent O(5)Na5Cd octahedra,  an edgeedge with one O(2)Na4Cd2 octahedra,  an edgeedge with one O(3)Na4Cd2 octahedra,  an edgeedge with one O(8)Na4Cd2 octahedra,  an edgeedge with one O(4)Na6 octahedra, and edges with two equivalent O(6)Na3Cd3 octahedra. The corner-sharing octahedral tilt angles range from 51-55°. In the second O site, O(2) is bonded to one Na(1), one Na(3), one Na(7), one Na(8), one Cd(1), and one Cd(3) atom to form ONa4Cd2 octahedra that share  a cornercorner with one O(6)Na3Cd3 octahedra,  a cornercorner with one O(3)Na4Cd2 octahedra,  a cornercorner with one O(9)Na4Cd2 octahedra,  a cornercorner with one O(1)Na5Cd octahedra,  a cornercorner with one O(5)Na5Cd octahedra,  a cornercorner with one O(7)Na3Cd3 pentagonal pyramid,  an edgeedge with one O(10)Na2Cd4 octahedra,  an edgeedge with one O(6)Na3Cd3 octahedra,  an edgeedge with one O(1)Na5Cd octahedra,  an edgeedge with one O(5)Na5Cd octahedra,  an edgeedge with one O(4)Na6 octahedra, and  an edgeedge with one O(7)Na3Cd3 pentagonal pyramid. The corner-sharing octahedral tilt angles range from 52-56°. In the third O site, O(3) is bonded to two equivalent Na(2), two equivalent Na(5), and two equivalent Cd(3) atoms to form distorted ONa4Cd2 octahedra that share corners with two equivalent O(6)Na3Cd3 octahedra, corners with two equivalent O(2)Na4Cd2 octahedra, corners with two equivalent O(7)Na3Cd3 pentagonal pyramids, edges with two equivalent O(8)Na4Cd2 octahedra, edges with two equivalent O(1)Na5Cd octahedra, and edges with two equivalent O(5)Na5Cd octahedra. The corner-sharing octahedral tilt angles range from 56-62°. In the fourth O site, O(4) is bonded to two equivalent Na(1), two equivalent Na(4), and two equivalent Na(8) atoms to form distorted ONa6 octahedra that share corners with two equivalent O(6)Na3Cd3 octahedra, corners with two equivalent O(8)Na4Cd2 octahedra, corners with two equivalent O(7)Na3Cd3 pentagonal pyramids, edges with two equivalent O(2)Na4Cd2 octahedra, edges with two equivalent O(1)Na5Cd octahedra, and edges with two equivalent O(5)Na5Cd octahedra. The corner-sharing octahedral tilt angles range from 54-59°. In the fifth O site, O(5) is bonded to one Na(1), one Na(2), one Na(3), one Na(5), one Na(8), and one Cd(4) atom to form distorted ONa5Cd octahedra that share  a cornercorner with one O(10)Na2Cd4 octahedra,  a cornercorner with one O(2)Na4Cd2 octahedra,  a cornercorner with one O(8)Na4Cd2 octahedra,  a cornercorner with one O(9)Na4Cd2 octahedra, corners with two equivalent O(1)Na5Cd octahedra,  an edgeedge with one O(2)Na4Cd2 octahedra,  an edgeedge with one O(3)Na4Cd2 octahedra,  an edgeedge with one O(8)Na4Cd2 octahedra,  an edgeedge with one O(4)Na6 octahedra, and edges with two equivalent O(7)Na3Cd3 pentagonal pyramids. The corner-sharing octahedral tilt angles range from 51-55°. In the sixth O site, O(6) is bonded to one Na(4), one Na(6), one Na(7), one Cd(1), one Cd(2), and one Cd(3) atom to form distorted ONa3Cd3 octahedra that share  a cornercorner with one O(2)Na4Cd2 octahedra,  a cornercorner with one O(3)Na4Cd2 octahedra,  a cornercorner with one O(8)Na4Cd2 octahedra,  a cornercorner with one O(4)Na6 octahedra, corners with two equivalent O(7)Na3Cd3 pentagonal pyramids,  an edgeedge with one O(10)Na2Cd4 octahedra,  an edgeedge with one O(2)Na4Cd2 octahedra,  an edgeedge with one O(8)Na4Cd2 octahedra,  an edgeedge with one O(9)Na4Cd2 octahedra, and edges with two equivalent O(1)Na5Cd octahedra. The corner-sharing octahedral tilt angles range from 54-62°. In the seventh O site, O(7) is bonded to one Na(3), one Na(5), one Na(8), one Cd(1), one Cd(2), and one Cd(4) atom to form distorted ONa3Cd3 pentagonal pyramids that share  a cornercorner with one O(2)Na4Cd2 octahedra,  a cornercorner with one O(3)Na4Cd2 octahedra,  a cornercorner with one O(8)Na4Cd2 octahedra,  a cornercorner with one O(4)Na6 octahedra, corners with two equivalent O(6)Na3Cd3 octahedra,  an edgeedge with one O(10)Na2Cd4 octahedra,  an edgeedge with one O(2)Na4Cd2 octahedra,  an edgeedge with one O(8)Na4Cd2 octahedra,  an edgeedge with one O(9)Na4Cd2 octahedra, and edges with two equivalent O(5)Na5Cd octahedra. The corner-sharing octahedral tilt angles range from 52-58°. In the eighth O site, O(8) is bonded to one Na(2), one Na(4), one Na(5), one Na(6), one Cd(2), and one Cd(4) atom to form ONa4Cd2 octahedra that share  a cornercorner with one O(10)Na2Cd4 octahedra,  a cornercorner with one O(6)Na3Cd3 octahedra,  a cornercorner with one O(1)Na5Cd octahedra,  a cornercorner with one O(5)Na5Cd octahedra,  a cornercorner with one O(4)Na6 octahedra,  a cornercorner with one O(7)Na3Cd3 pentagonal pyramid,  an edgeedge with one O(6)Na3Cd3 octahedra,  an edgeedge with one O(3)Na4Cd2 octahedra,  an edgeedge with one O(9)Na4Cd2 octahedra,  an edgeedge with one O(1)Na5Cd octahedra,  an edgeedge with one O(5)Na5Cd octahedra, and  an edgeedge with one O(7)Na3Cd3 pentagonal pyramid. The corner-sharing octahedral tilt angles range from 51-58°. In the ninth O site, O(9) is bonded to two equivalent Na(3), two equivalent Na(6), and two equivalent Cd(2) atoms to form distorted ONa4Cd2 octahedra that share corners with two equivalent O(2)Na4Cd2 octahedra, corners with two equivalent O(1)Na5Cd octahedra, corners with two equivalent O(5)Na5Cd octahedra, edges with two equivalent O(6)Na3Cd3 octahedra, edges with two equivalent O(8)Na4Cd2 octahedra, and edges with two equivalent O(7)Na3Cd3 pentagonal pyramids. The corner-sharing octahedral tilt angles range from 52-56°. In the tenth O site, O(10) is bonded to two equivalent Na(7), two equivalent Cd(1), and two equivalent Cd(4) atoms to form distorted ONa2Cd4 octahedra that share corners with two equivalent O(8)Na4Cd2 octahedra, corners with two equivalent O(1)Na5Cd octahedra, corners with two equivalent O(5)Na5Cd octahedra, edges with two equivalent O(6)Na3Cd3 octahedra, edges with two equivalent O(2)Na4Cd2 octahedra, and edges with two equivalent O(7)Na3Cd3 pentagonal pyramids. The corner-sharing octahedral tilt angles range from 51-58°.