K5Na3Nb4(WO6)4 is (Cubic) Perovskite-derived structured and crystallizes in the monoclinic Cm space group. There are four inequivalent K sites. In the first K site, K(1) is bonded to one O(13), one O(9), two equivalent O(1), two equivalent O(11), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms to form KO12 cuboctahedra that share corners with four equivalent K(3)O12 cuboctahedra, corners with eight equivalent Na(2)O12 cuboctahedra, faces with two equivalent Na(1)O12 cuboctahedra, faces with four equivalent K(2)O12 cuboctahedra,  a faceface with one Nb(2)O6 octahedra,  a faceface with one Nb(3)O6 octahedra,  a faceface with one W(1)O6 octahedra,  a faceface with one W(2)O6 octahedra, faces with two equivalent Nb(1)O6 octahedra, and faces with two equivalent W(3)O6 octahedra. In the second K site, K(2) is bonded to one O(1), one O(13), one O(2), one O(3), one O(4), one O(5), one O(6), one O(7), one O(8), one O(9), and two equivalent O(11) atoms to form KO12 cuboctahedra that share corners with four equivalent K(2)O12 cuboctahedra, corners with four equivalent K(4)O12 cuboctahedra, corners with four equivalent Na(1)O12 cuboctahedra, faces with two equivalent K(1)O12 cuboctahedra, faces with two equivalent K(3)O12 cuboctahedra, faces with two equivalent Na(2)O12 cuboctahedra,  a faceface with one Nb(2)O6 octahedra,  a faceface with one Nb(3)O6 octahedra,  a faceface with one W(1)O6 octahedra,  a faceface with one W(2)O6 octahedra, faces with two equivalent Nb(1)O6 octahedra, and faces with two equivalent W(3)O6 octahedra. In the third K site, K(3) is bonded to one O(13), one O(9), two equivalent O(11), two equivalent O(5), two equivalent O(6), two equivalent O(7), and two equivalent O(8) atoms to form KO12 cuboctahedra that share corners with four equivalent K(1)O12 cuboctahedra, corners with eight equivalent Na(2)O12 cuboctahedra, faces with two equivalent K(4)O12 cuboctahedra, faces with four equivalent K(2)O12 cuboctahedra,  a faceface with one Nb(2)O6 octahedra,  a faceface with one Nb(3)O6 octahedra,  a faceface with one W(1)O6 octahedra,  a faceface with one W(2)O6 octahedra, faces with two equivalent Nb(1)O6 octahedra, and faces with two equivalent W(3)O6 octahedra. In the fourth K site, K(4) is bonded to one O(10), one O(14), two equivalent O(12), two equivalent O(5), two equivalent O(6), two equivalent O(7), and two equivalent O(8) atoms to form KO12 cuboctahedra that share corners with four equivalent Na(1)O12 cuboctahedra, corners with eight equivalent K(2)O12 cuboctahedra, faces with two equivalent K(3)O12 cuboctahedra, faces with four equivalent Na(2)O12 cuboctahedra,  a faceface with one Nb(2)O6 octahedra,  a faceface with one Nb(3)O6 octahedra,  a faceface with one W(1)O6 octahedra,  a faceface with one W(2)O6 octahedra, faces with two equivalent Nb(1)O6 octahedra, and faces with two equivalent W(3)O6 octahedra. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded to one O(10), one O(14), two equivalent O(1), two equivalent O(12), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms to form NaO12 cuboctahedra that share corners with four equivalent K(4)O12 cuboctahedra, corners with eight equivalent K(2)O12 cuboctahedra, faces with two equivalent K(1)O12 cuboctahedra, faces with four equivalent Na(2)O12 cuboctahedra,  a faceface with one Nb(2)O6 octahedra,  a faceface with one Nb(3)O6 octahedra,  a faceface with one W(1)O6 octahedra,  a faceface with one W(2)O6 octahedra, faces with two equivalent Nb(1)O6 octahedra, and faces with two equivalent W(3)O6 octahedra. In the second Na site, Na(2) is bonded to one O(1), one O(10), one O(14), one O(2), one O(3), one O(4), one O(5), one O(6), one O(7), one O(8), and two equivalent O(12) atoms to form NaO12 cuboctahedra that share corners with four equivalent K(1)O12 cuboctahedra, corners with four equivalent K(3)O12 cuboctahedra, corners with four equivalent Na(2)O12 cuboctahedra, faces with two equivalent K(2)O12 cuboctahedra, faces with two equivalent K(4)O12 cuboctahedra, faces with two equivalent Na(1)O12 cuboctahedra,  a faceface with one Nb(2)O6 octahedra,  a faceface with one Nb(3)O6 octahedra,  a faceface with one W(1)O6 octahedra,  a faceface with one W(2)O6 octahedra, faces with two equivalent Nb(1)O6 octahedra, and faces with two equivalent W(3)O6 octahedra. There are three inequivalent Nb sites. In the first Nb site, Nb(1) is bonded to one O(11), one O(12), one O(2), one O(4), one O(6), and one O(8) atom to form NbO6 octahedra that share corners with two equivalent Nb(3)O6 octahedra, corners with two equivalent W(2)O6 octahedra, corners with two equivalent W(3)O6 octahedra,  a faceface with one K(1)O12 cuboctahedra,  a faceface with one K(3)O12 cuboctahedra,  a faceface with one K(4)O12 cuboctahedra,  a faceface with one Na(1)O12 cuboctahedra, faces with two equivalent K(2)O12 cuboctahedra, and faces with two equivalent Na(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 1°. In the second Nb site, Nb(2) is bonded to one O(13), one O(14), two equivalent O(3), and two equivalent O(7) atoms to form NbO6 octahedra that share corners with two equivalent Nb(3)O6 octahedra, corners with four equivalent W(3)O6 octahedra,  a faceface with one K(1)O12 cuboctahedra,  a faceface with one K(3)O12 cuboctahedra,  a faceface with one K(4)O12 cuboctahedra,  a faceface with one Na(1)O12 cuboctahedra, faces with two equivalent K(2)O12 cuboctahedra, and faces with two equivalent Na(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-2°. In the third Nb site, Nb(3) is bonded to one O(13), one O(14), two equivalent O(4), and two equivalent O(8) atoms to form NbO6 octahedra that share corners with two equivalent Nb(2)O6 octahedra, corners with four equivalent Nb(1)O6 octahedra,  a faceface with one K(1)O12 cuboctahedra,  a faceface with one K(3)O12 cuboctahedra,  a faceface with one K(4)O12 cuboctahedra,  a faceface with one Na(1)O12 cuboctahedra, faces with two equivalent K(2)O12 cuboctahedra, and faces with two equivalent Na(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-1°. There are three inequivalent W sites. In the first W site, W(1) is bonded to one O(10), one O(9), two equivalent O(1), and two equivalent O(5) atoms to form WO6 octahedra that share corners with two equivalent W(2)O6 octahedra, corners with four equivalent W(3)O6 octahedra,  a faceface with one K(1)O12 cuboctahedra,  a faceface with one K(3)O12 cuboctahedra,  a faceface with one K(4)O12 cuboctahedra,  a faceface with one Na(1)O12 cuboctahedra, faces with two equivalent K(2)O12 cuboctahedra, and faces with two equivalent Na(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-1°. In the second W site, W(2) is bonded to one O(10), one O(9), two equivalent O(2), and two equivalent O(6) atoms to form WO6 octahedra that share corners with two equivalent W(1)O6 octahedra, corners with four equivalent Nb(1)O6 octahedra,  a faceface with one K(1)O12 cuboctahedra,  a faceface with one K(3)O12 cuboctahedra,  a faceface with one K(4)O12 cuboctahedra,  a faceface with one Na(1)O12 cuboctahedra, faces with two equivalent K(2)O12 cuboctahedra, and faces with two equivalent Na(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-1°. In the third W site, W(3) is bonded to one O(1), one O(11), one O(12), one O(3), one O(5), and one O(7) atom to form WO6 octahedra that share corners with two equivalent Nb(1)O6 octahedra, corners with two equivalent Nb(2)O6 octahedra, corners with two equivalent W(1)O6 octahedra,  a faceface with one K(1)O12 cuboctahedra,  a faceface with one K(3)O12 cuboctahedra,  a faceface with one K(4)O12 cuboctahedra,  a faceface with one Na(1)O12 cuboctahedra, faces with two equivalent K(2)O12 cuboctahedra, and faces with two equivalent Na(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 1-2°. There are fourteen inequivalent O sites. In the first O site, O(1) is bonded to one K(1), one K(2), one Na(1), one Na(2), one W(1), and one W(3) atom to form distorted OK2Na2W2 octahedra that share corners with two equivalent O(2)K2Na2NbW octahedra, corners with two equivalent O(6)K3NaNbW octahedra, corners with two equivalent O(5)K3NaW2 octahedra, corners with two equivalent O(13)K4Nb2 octahedra, corners with two equivalent O(11)K4NbW octahedra, corners with two equivalent O(12)KNa3NbW octahedra, edges with two equivalent O(2)K2Na2NbW octahedra, edges with two equivalent O(3)K2Na2NbW octahedra,  a faceface with one O(3)K2Na2NbW octahedra,  a faceface with one O(1)K2Na2W2 octahedra,  a faceface with one O(7)K3NaNbW octahedra,  a faceface with one O(5)K3NaW2 octahedra,  a faceface with one O(11)K4NbW octahedra,  a faceface with one O(9)K4W2 octahedra,  a faceface with one O(12)KNa3NbW octahedra, and  a faceface with one O(10)KNa3W2 octahedra. The corner-sharing octahedral tilt angles range from 1-62°. In the second O site, O(2) is bonded to one K(1), one K(2), one Na(1), one Na(2), one Nb(1), and one W(2) atom to form distorted OK2Na2NbW octahedra that share corners with two equivalent O(1)K2Na2W2 octahedra, corners with two equivalent O(6)K3NaNbW octahedra, corners with two equivalent O(7)K3NaNbW octahedra, corners with two equivalent O(5)K3NaW2 octahedra, corners with two equivalent O(13)K4Nb2 octahedra, corners with two equivalent O(11)K4NbW octahedra, corners with two equivalent O(12)KNa3NbW octahedra, corners with six equivalent O(3)K2Na2NbW octahedra, edges with two equivalent O(1)K2Na2W2 octahedra,  a faceface with one O(2)K2Na2NbW octahedra,  a faceface with one O(6)K3NaNbW octahedra,  a faceface with one O(11)K4NbW octahedra,  a faceface with one O(9)K4W2 octahedra,  a faceface with one O(12)KNa3NbW octahedra, and  a faceface with one O(10)KNa3W2 octahedra. The corner-sharing octahedral tilt angles range from 0-62°. In the third O site, O(3) is bonded to one K(1), one K(2), one Na(1), one Na(2), one Nb(2), and one W(3) atom to form distorted OK2Na2NbW octahedra that share corners with two equivalent O(6)K3NaNbW octahedra, corners with two equivalent O(7)K3NaNbW octahedra, corners with two equivalent O(11)K4NbW octahedra, corners with two equivalent O(9)K4W2 octahedra, corners with two equivalent O(12)KNa3NbW octahedra, corners with two equivalent O(10)KNa3W2 octahedra, corners with six equivalent O(2)K2Na2NbW octahedra, edges with two equivalent O(1)K2Na2W2 octahedra,  a faceface with one O(3)K2Na2NbW octahedra,  a faceface with one O(1)K2Na2W2 octahedra,  a faceface with one O(7)K3NaNbW octahedra,  a faceface with one O(5)K3NaW2 octahedra,  a faceface with one O(13)K4Nb2 octahedra,  a faceface with one O(11)K4NbW octahedra, and  a faceface with one O(12)KNa3NbW octahedra. The corner-sharing octahedral tilt angles range from 1-60°. In the fourth O site, O(4) is bonded in a distorted linear geometry to one K(1), one K(2), one Na(1), one Na(2), one Nb(1), and one Nb(3) atom. In the fifth O site, O(5) is bonded to one K(2), one K(3), one K(4), one Na(2), one W(1), and one W(3) atom to form distorted OK3NaW2 octahedra that share corners with two equivalent O(2)K2Na2NbW octahedra, corners with two equivalent O(1)K2Na2W2 octahedra, corners with two equivalent O(6)K3NaNbW octahedra, corners with two equivalent O(13)K4Nb2 octahedra, corners with two equivalent O(11)K4NbW octahedra, corners with two equivalent O(12)KNa3NbW octahedra, edges with two equivalent O(6)K3NaNbW octahedra, edges with two equivalent O(7)K3NaNbW octahedra,  a faceface with one O(3)K2Na2NbW octahedra,  a faceface with one O(1)K2Na2W2 octahedra,  a faceface with one O(7)K3NaNbW octahedra,  a faceface with one O(5)K3NaW2 octahedra,  a faceface with one O(11)K4NbW octahedra,  a faceface with one O(9)K4W2 octahedra,  a faceface with one O(12)KNa3NbW octahedra, and  a faceface with one O(10)KNa3W2 octahedra. The corner-sharing octahedral tilt angles range from 1-62°. In the sixth O site, O(6) is bonded to one K(2), one K(3), one K(4), one Na(2), one Nb(1), and one W(2) atom to form distorted OK3NaNbW octahedra that share corners with two equivalent O(2)K2Na2NbW octahedra, corners with two equivalent O(3)K2Na2NbW octahedra, corners with two equivalent O(1)K2Na2W2 octahedra, corners with two equivalent O(5)K3NaW2 octahedra, corners with two equivalent O(13)K4Nb2 octahedra, corners with two equivalent O(11)K4NbW octahedra, corners with two equivalent O(12)KNa3NbW octahedra, corners with six equivalent O(7)K3NaNbW octahedra, edges with two equivalent O(5)K3NaW2 octahedra,  a faceface with one O(2)K2Na2NbW octahedra,  a faceface with one O(6)K3NaNbW octahedra,  a faceface with one O(11)K4NbW octahedra,  a faceface with one O(9)K4W2 octahedra,  a faceface with one O(12)KNa3NbW octahedra, and  a faceface with one O(10)KNa3W2 octahedra. The corner-sharing octahedral tilt angles range from 0-62°. In the seventh O site, O(7) is bonded to one K(2), one K(3), one K(4), one Na(2), one Nb(2), and one W(3) atom to form distorted OK3NaNbW octahedra that share corners with two equivalent O(2)K2Na2NbW octahedra, corners with two equivalent O(3)K2Na2NbW octahedra, corners with two equivalent O(11)K4NbW octahedra, corners with two equivalent O(9)K4W2 octahedra, corners with two equivalent O(12)KNa3NbW octahedra, corners with two equivalent O(10)KNa3W2 octahedra, corners with six equivalent O(6)K3NaNbW octahedra, edges with two equivalent O(5)K3NaW2 octahedra,  a faceface with one O(3)K2Na2NbW octahedra,  a faceface with one O(1)K2Na2W2 octahedra,  a faceface with one O(7)K3NaNbW octahedra,  a faceface with one O(5)K3NaW2 octahedra,  a faceface with one O(13)K4Nb2 octahedra,  a faceface with one O(11)K4NbW octahedra, and  a faceface with one O(12)KNa3NbW octahedra. The corner-sharing octahedral tilt angles range from 1-60°. In the eighth O site, O(8) is bonded in a distorted linear geometry to one K(2), one K(3), one K(4), one Na(2), one Nb(1), and one Nb(3) atom. In the ninth O site, O(9) is bonded to one K(1), one K(3), two equivalent K(2), one W(1), and one W(2) atom to form distorted OK4W2 octahedra that share corners with two equivalent O(10)KNa3W2 octahedra, corners with four equivalent O(3)K2Na2NbW octahedra, corners with four equivalent O(7)K3NaNbW octahedra, corners with four equivalent O(13)K4Nb2 octahedra, edges with four equivalent O(11)K4NbW octahedra, faces with two equivalent O(2)K2Na2NbW octahedra, faces with two equivalent O(1)K2Na2W2 octahedra, faces with two equivalent O(6)K3NaNbW octahedra, and faces with two equivalent O(5)K3NaW2 octahedra. The corner-sharing octahedral tilt angles range from 0-60°. In the tenth O site, O(10) is bonded to one K(4), one Na(1), two equivalent Na(2), one W(1), and one W(2) atom to form distorted OKNa3W2 octahedra that share corners with two equivalent O(9)K4W2 octahedra, corners with four equivalent O(3)K2Na2NbW octahedra, corners with four equivalent O(7)K3NaNbW octahedra, edges with four equivalent O(12)KNa3NbW octahedra, faces with two equivalent O(2)K2Na2NbW octahedra, faces with two equivalent O(1)K2Na2W2 octahedra, faces with two equivalent O(6)K3NaNbW octahedra, and faces with two equivalent O(5)K3NaW2 octahedra. The corner-sharing octahedral tilt angles range from 0-60°. In the eleventh O site, O(11) is bonded to one K(1), one K(3), two equivalent K(2), one Nb(1), and one W(3) atom to form distorted OK4NbW octahedra that share corners with two equivalent O(2)K2Na2NbW octahedra, corners with two equivalent O(3)K2Na2NbW octahedra, corners with two equivalent O(1)K2Na2W2 octahedra, corners with two equivalent O(6)K3NaNbW octahedra, corners with two equivalent O(7)K3NaNbW octahedra, corners with two equivalent O(5)K3NaW2 octahedra, corners with two equivalent O(12)KNa3NbW octahedra, corners with four equivalent O(11)K4NbW octahedra, edges with two equivalent O(13)K4Nb2 octahedra, edges with two equivalent O(9)K4W2 octahedra,  a faceface with one O(2)K2Na2NbW octahedra,  a faceface with one O(3)K2Na2NbW octahedra,  a faceface with one O(1)K2Na2W2 octahedra,  a faceface with one O(6)K3NaNbW octahedra,  a faceface with one O(7)K3NaNbW octahedra, and  a faceface with one O(5)K3NaW2 octahedra. The corner-sharing octahedral tilt angles range from 0-61°. In the twelfth O site, O(12) is bonded to one K(4), one Na(1), two equivalent Na(2), one Nb(1), and one W(3) atom to form distorted OKNa3NbW octahedra that share corners with two equivalent O(2)K2Na2NbW octahedra, corners with two equivalent O(3)K2Na2NbW octahedra, corners with two equivalent O(1)K2Na2W2 octahedra, corners with two equivalent O(6)K3NaNbW octahedra, corners with two equivalent O(7)K3NaNbW octahedra, corners with two equivalent O(5)K3NaW2 octahedra, corners with two equivalent O(11)K4NbW octahedra, corners with four equivalent O(12)KNa3NbW octahedra, edges with two equivalent O(10)KNa3W2 octahedra,  a faceface with one O(2)K2Na2NbW octahedra,  a faceface with one O(3)K2Na2NbW octahedra,  a faceface with one O(1)K2Na2W2 octahedra,  a faceface with one O(6)K3NaNbW octahedra,  a faceface with one O(7)K3NaNbW octahedra, and  a faceface with one O(5)K3NaW2 octahedra. The corner-sharing octahedral tilt angles range from 0-61°. In the thirteenth O site, O(13) is bonded to one K(1), one K(3), two equivalent K(2), one Nb(2), and one Nb(3) atom to form distorted OK4Nb2 octahedra that share corners with four equivalent O(2)K2Na2NbW octahedra, corners with four equivalent O(1)K2Na2W2 octahedra, corners with four equivalent O(6)K3NaNbW octahedra, corners with four equivalent O(5)K3NaW2 octahedra, corners with four equivalent O(9)K4W2 octahedra, edges with four equivalent O(11)K4NbW octahedra, faces with two equivalent O(3)K2Na2NbW octahedra, and faces with two equivalent O(7)K3NaNbW octahedra. The corner-sharing octahedral tilt angles range from 1-60°. In the fourteenth O site, O(14) is bonded in a distorted linear geometry to one K(4), one Na(1), two equivalent Na(2), one Nb(2), and one Nb(3) atom.
K5Na3Nb4(WO6)4 is (Cubic) Perovskite-derived structured and crystallizes in the monoclinic Cm space group. There are four inequivalent K sites. In the first K site, K(1) is bonded to one O(13), one O(9), two equivalent O(1), two equivalent O(11), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms to form KO12 cuboctahedra that share corners with four equivalent K(3)O12 cuboctahedra, corners with eight equivalent Na(2)O12 cuboctahedra, faces with two equivalent Na(1)O12 cuboctahedra, faces with four equivalent K(2)O12 cuboctahedra,  a faceface with one Nb(2)O6 octahedra,  a faceface with one Nb(3)O6 octahedra,  a faceface with one W(1)O6 octahedra,  a faceface with one W(2)O6 octahedra, faces with two equivalent Nb(1)O6 octahedra, and faces with two equivalent W(3)O6 octahedra. The K(1)-O(13) bond length is 2.82 Å. The K(1)-O(9) bond length is 2.84 Å. Both K(1)-O(1) bond lengths are 2.87 Å. Both K(1)-O(11) bond lengths are 2.85 Å. Both K(1)-O(2) bond lengths are 2.87 Å. Both K(1)-O(3) bond lengths are 2.87 Å. Both K(1)-O(4) bond lengths are 2.85 Å. In the second K site, K(2) is bonded to one O(1), one O(13), one O(2), one O(3), one O(4), one O(5), one O(6), one O(7), one O(8), one O(9), and two equivalent O(11) atoms to form KO12 cuboctahedra that share corners with four equivalent K(2)O12 cuboctahedra, corners with four equivalent K(4)O12 cuboctahedra, corners with four equivalent Na(1)O12 cuboctahedra, faces with two equivalent K(1)O12 cuboctahedra, faces with two equivalent K(3)O12 cuboctahedra, faces with two equivalent Na(2)O12 cuboctahedra,  a faceface with one Nb(2)O6 octahedra,  a faceface with one Nb(3)O6 octahedra,  a faceface with one W(1)O6 octahedra,  a faceface with one W(2)O6 octahedra, faces with two equivalent Nb(1)O6 octahedra, and faces with two equivalent W(3)O6 octahedra. The K(2)-O(1) bond length is 2.87 Å. The K(2)-O(13) bond length is 2.83 Å. The K(2)-O(2) bond length is 2.87 Å. The K(2)-O(3) bond length is 2.87 Å. The K(2)-O(4) bond length is 2.86 Å. The K(2)-O(5) bond length is 2.84 Å. The K(2)-O(6) bond length is 2.85 Å. The K(2)-O(7) bond length is 2.84 Å. The K(2)-O(8) bond length is 2.84 Å. The K(2)-O(9) bond length is 2.86 Å. Both K(2)-O(11) bond lengths are 2.84 Å. In the third K site, K(3) is bonded to one O(13), one O(9), two equivalent O(11), two equivalent O(5), two equivalent O(6), two equivalent O(7), and two equivalent O(8) atoms to form KO12 cuboctahedra that share corners with four equivalent K(1)O12 cuboctahedra, corners with eight equivalent Na(2)O12 cuboctahedra, faces with two equivalent K(4)O12 cuboctahedra, faces with four equivalent K(2)O12 cuboctahedra,  a faceface with one Nb(2)O6 octahedra,  a faceface with one Nb(3)O6 octahedra,  a faceface with one W(1)O6 octahedra,  a faceface with one W(2)O6 octahedra, faces with two equivalent Nb(1)O6 octahedra, and faces with two equivalent W(3)O6 octahedra. The K(3)-O(13) bond length is 2.84 Å. The K(3)-O(9) bond length is 2.86 Å. Both K(3)-O(11) bond lengths are 2.84 Å. Both K(3)-O(5) bond lengths are 2.88 Å. Both K(3)-O(6) bond lengths are 2.86 Å. Both K(3)-O(7) bond lengths are 2.85 Å. Both K(3)-O(8) bond lengths are 2.86 Å. In the fourth K site, K(4) is bonded to one O(10), one O(14), two equivalent O(12), two equivalent O(5), two equivalent O(6), two equivalent O(7), and two equivalent O(8) atoms to form KO12 cuboctahedra that share corners with four equivalent Na(1)O12 cuboctahedra, corners with eight equivalent K(2)O12 cuboctahedra, faces with two equivalent K(3)O12 cuboctahedra, faces with four equivalent Na(2)O12 cuboctahedra,  a faceface with one Nb(2)O6 octahedra,  a faceface with one Nb(3)O6 octahedra,  a faceface with one W(1)O6 octahedra,  a faceface with one W(2)O6 octahedra, faces with two equivalent Nb(1)O6 octahedra, and faces with two equivalent W(3)O6 octahedra. The K(4)-O(10) bond length is 2.86 Å. The K(4)-O(14) bond length is 2.84 Å. Both K(4)-O(12) bond lengths are 2.87 Å. Both K(4)-O(5) bond lengths are 2.85 Å. Both K(4)-O(6) bond lengths are 2.85 Å. Both K(4)-O(7) bond lengths are 2.84 Å. Both K(4)-O(8) bond lengths are 2.83 Å. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded to one O(10), one O(14), two equivalent O(1), two equivalent O(12), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms to form NaO12 cuboctahedra that share corners with four equivalent K(4)O12 cuboctahedra, corners with eight equivalent K(2)O12 cuboctahedra, faces with two equivalent K(1)O12 cuboctahedra, faces with four equivalent Na(2)O12 cuboctahedra,  a faceface with one Nb(2)O6 octahedra,  a faceface with one Nb(3)O6 octahedra,  a faceface with one W(1)O6 octahedra,  a faceface with one W(2)O6 octahedra, faces with two equivalent Nb(1)O6 octahedra, and faces with two equivalent W(3)O6 octahedra. The Na(1)-O(10) bond length is 2.84 Å. The Na(1)-O(14) bond length is 2.82 Å. Both Na(1)-O(1) bond lengths are 2.84 Å. Both Na(1)-O(12) bond lengths are 2.82 Å. Both Na(1)-O(2) bond lengths are 2.83 Å. Both Na(1)-O(3) bond lengths are 2.80 Å. Both Na(1)-O(4) bond lengths are 2.82 Å. In the second Na site, Na(2) is bonded to one O(1), one O(10), one O(14), one O(2), one O(3), one O(4), one O(5), one O(6), one O(7), one O(8), and two equivalent O(12) atoms to form NaO12 cuboctahedra that share corners with four equivalent K(1)O12 cuboctahedra, corners with four equivalent K(3)O12 cuboctahedra, corners with four equivalent Na(2)O12 cuboctahedra, faces with two equivalent K(2)O12 cuboctahedra, faces with two equivalent K(4)O12 cuboctahedra, faces with two equivalent Na(1)O12 cuboctahedra,  a faceface with one Nb(2)O6 octahedra,  a faceface with one Nb(3)O6 octahedra,  a faceface with one W(1)O6 octahedra,  a faceface with one W(2)O6 octahedra, faces with two equivalent Nb(1)O6 octahedra, and faces with two equivalent W(3)O6 octahedra. The Na(2)-O(1) bond length is 2.82 Å. The Na(2)-O(10) bond length is 2.86 Å. The Na(2)-O(14) bond length is 2.83 Å. The Na(2)-O(2) bond length is 2.83 Å. The Na(2)-O(3) bond length is 2.81 Å. The Na(2)-O(4) bond length is 2.82 Å. The Na(2)-O(5) bond length is 2.82 Å. The Na(2)-O(6) bond length is 2.83 Å. The Na(2)-O(7) bond length is 2.82 Å. The Na(2)-O(8) bond length is 2.81 Å. There is one shorter (2.84 Å) and one longer (2.85 Å) Na(2)-O(12) bond length. There are three inequivalent Nb sites. In the first Nb site, Nb(1) is bonded to one O(11), one O(12), one O(2), one O(4), one O(6), and one O(8) atom to form NbO6 octahedra that share corners with two equivalent Nb(3)O6 octahedra, corners with two equivalent W(2)O6 octahedra, corners with two equivalent W(3)O6 octahedra,  a faceface with one K(1)O12 cuboctahedra,  a faceface with one K(3)O12 cuboctahedra,  a faceface with one K(4)O12 cuboctahedra,  a faceface with one Na(1)O12 cuboctahedra, faces with two equivalent K(2)O12 cuboctahedra, and faces with two equivalent Na(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 1°. The Nb(1)-O(11) bond length is 2.03 Å. The Nb(1)-O(12) bond length is 2.00 Å. The Nb(1)-O(2) bond length is 2.05 Å. The Nb(1)-O(4) bond length is 2.00 Å. The Nb(1)-O(6) bond length is 2.07 Å. The Nb(1)-O(8) bond length is 2.00 Å. In the second Nb site, Nb(2) is bonded to one O(13), one O(14), two equivalent O(3), and two equivalent O(7) atoms to form NbO6 octahedra that share corners with two equivalent Nb(3)O6 octahedra, corners with four equivalent W(3)O6 octahedra,  a faceface with one K(1)O12 cuboctahedra,  a faceface with one K(3)O12 cuboctahedra,  a faceface with one K(4)O12 cuboctahedra,  a faceface with one Na(1)O12 cuboctahedra, faces with two equivalent K(2)O12 cuboctahedra, and faces with two equivalent Na(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-2°. The Nb(2)-O(13) bond length is 2.01 Å. The Nb(2)-O(14) bond length is 1.99 Å. Both Nb(2)-O(3) bond lengths are 2.03 Å. Both Nb(2)-O(7) bond lengths are 2.04 Å. In the third Nb site, Nb(3) is bonded to one O(13), one O(14), two equivalent O(4), and two equivalent O(8) atoms to form NbO6 octahedra that share corners with two equivalent Nb(2)O6 octahedra, corners with four equivalent Nb(1)O6 octahedra,  a faceface with one K(1)O12 cuboctahedra,  a faceface with one K(3)O12 cuboctahedra,  a faceface with one K(4)O12 cuboctahedra,  a faceface with one Na(1)O12 cuboctahedra, faces with two equivalent K(2)O12 cuboctahedra, and faces with two equivalent Na(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-1°. The Nb(3)-O(13) bond length is 2.03 Å. The Nb(3)-O(14) bond length is 2.01 Å. Both Nb(3)-O(4) bond lengths are 2.02 Å. Both Nb(3)-O(8) bond lengths are 2.03 Å. There are three inequivalent W sites. In the first W site, W(1) is bonded to one O(10), one O(9), two equivalent O(1), and two equivalent O(5) atoms to form WO6 octahedra that share corners with two equivalent W(2)O6 octahedra, corners with four equivalent W(3)O6 octahedra,  a faceface with one K(1)O12 cuboctahedra,  a faceface with one K(3)O12 cuboctahedra,  a faceface with one K(4)O12 cuboctahedra,  a faceface with one Na(1)O12 cuboctahedra, faces with two equivalent K(2)O12 cuboctahedra, and faces with two equivalent Na(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-1°. The W(1)-O(10) bond length is 2.04 Å. The W(1)-O(9) bond length is 2.08 Å. Both W(1)-O(1) bond lengths are 1.99 Å. Both W(1)-O(5) bond lengths are 1.99 Å. In the second W site, W(2) is bonded to one O(10), one O(9), two equivalent O(2), and two equivalent O(6) atoms to form WO6 octahedra that share corners with two equivalent W(1)O6 octahedra, corners with four equivalent Nb(1)O6 octahedra,  a faceface with one K(1)O12 cuboctahedra,  a faceface with one K(3)O12 cuboctahedra,  a faceface with one K(4)O12 cuboctahedra,  a faceface with one Na(1)O12 cuboctahedra, faces with two equivalent K(2)O12 cuboctahedra, and faces with two equivalent Na(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-1°. The W(2)-O(10) bond length is 1.95 Å. The W(2)-O(9) bond length is 1.97 Å. Both W(2)-O(2) bond lengths are 1.96 Å. Both W(2)-O(6) bond lengths are 1.96 Å. In the third W site, W(3) is bonded to one O(1), one O(11), one O(12), one O(3), one O(5), and one O(7) atom to form WO6 octahedra that share corners with two equivalent Nb(1)O6 octahedra, corners with two equivalent Nb(2)O6 octahedra, corners with two equivalent W(1)O6 octahedra,  a faceface with one K(1)O12 cuboctahedra,  a faceface with one K(3)O12 cuboctahedra,  a faceface with one K(4)O12 cuboctahedra,  a faceface with one Na(1)O12 cuboctahedra, faces with two equivalent K(2)O12 cuboctahedra, and faces with two equivalent Na(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 1-2°. The W(3)-O(1) bond length is 2.03 Å. The W(3)-O(11) bond length is 2.01 Å. The W(3)-O(12) bond length is 2.00 Å. The W(3)-O(3) bond length is 1.98 Å. The W(3)-O(5) bond length is 2.04 Å. The W(3)-O(7) bond length is 1.99 Å. There are fourteen inequivalent O sites. In the first O site, O(1) is bonded to one K(1), one K(2), one Na(1), one Na(2), one W(1), and one W(3) atom to form distorted OK2Na2W2 octahedra that share corners with two equivalent O(2)K2Na2NbW octahedra, corners with two equivalent O(6)K3NaNbW octahedra, corners with two equivalent O(5)K3NaW2 octahedra, corners with two equivalent O(13)K4Nb2 octahedra, corners with two equivalent O(11)K4NbW octahedra, corners with two equivalent O(12)KNa3NbW octahedra, edges with two equivalent O(2)K2Na2NbW octahedra, edges with two equivalent O(3)K2Na2NbW octahedra,  a faceface with one O(3)K2Na2NbW octahedra,  a faceface with one O(1)K2Na2W2 octahedra,  a faceface with one O(7)K3NaNbW octahedra,  a faceface with one O(5)K3NaW2 octahedra,  a faceface with one O(11)K4NbW octahedra,  a faceface with one O(9)K4W2 octahedra,  a faceface with one O(12)KNa3NbW octahedra, and  a faceface with one O(10)KNa3W2 octahedra. The corner-sharing octahedral tilt angles range from 1-62°. In the second O site, O(2) is bonded to one K(1), one K(2), one Na(1), one Na(2), one Nb(1), and one W(2) atom to form distorted OK2Na2NbW octahedra that share corners with two equivalent O(1)K2Na2W2 octahedra, corners with two equivalent O(6)K3NaNbW octahedra, corners with two equivalent O(7)K3NaNbW octahedra, corners with two equivalent O(5)K3NaW2 octahedra, corners with two equivalent O(13)K4Nb2 octahedra, corners with two equivalent O(11)K4NbW octahedra, corners with two equivalent O(12)KNa3NbW octahedra, corners with six equivalent O(3)K2Na2NbW octahedra, edges with two equivalent O(1)K2Na2W2 octahedra,  a faceface with one O(2)K2Na2NbW octahedra,  a faceface with one O(6)K3NaNbW octahedra,  a faceface with one O(11)K4NbW octahedra,  a faceface with one O(9)K4W2 octahedra,  a faceface with one O(12)KNa3NbW octahedra, and  a faceface with one O(10)KNa3W2 octahedra. The corner-sharing octahedral tilt angles range from 0-62°. In the third O site, O(3) is bonded to one K(1), one K(2), one Na(1), one Na(2), one Nb(2), and one W(3) atom to form distorted OK2Na2NbW octahedra that share corners with two equivalent O(6)K3NaNbW octahedra, corners with two equivalent O(7)K3NaNbW octahedra, corners with two equivalent O(11)K4NbW octahedra, corners with two equivalent O(9)K4W2 octahedra, corners with two equivalent O(12)KNa3NbW octahedra, corners with two equivalent O(10)KNa3W2 octahedra, corners with six equivalent O(2)K2Na2NbW octahedra, edges with two equivalent O(1)K2Na2W2 octahedra,  a faceface with one O(3)K2Na2NbW octahedra,  a faceface with one O(1)K2Na2W2 octahedra,  a faceface with one O(7)K3NaNbW octahedra,  a faceface with one O(5)K3NaW2 octahedra,  a faceface with one O(13)K4Nb2 octahedra,  a faceface with one O(11)K4NbW octahedra, and  a faceface with one O(12)KNa3NbW octahedra. The corner-sharing octahedral tilt angles range from 1-60°. In the fourth O site, O(4) is bonded in a distorted linear geometry to one K(1), one K(2), one Na(1), one Na(2), one Nb(1), and one Nb(3) atom. In the fifth O site, O(5) is bonded to one K(2), one K(3), one K(4), one Na(2), one W(1), and one W(3) atom to form distorted OK3NaW2 octahedra that share corners with two equivalent O(2)K2Na2NbW octahedra, corners with two equivalent O(1)K2Na2W2 octahedra, corners with two equivalent O(6)K3NaNbW octahedra, corners with two equivalent O(13)K4Nb2 octahedra, corners with two equivalent O(11)K4NbW octahedra, corners with two equivalent O(12)KNa3NbW octahedra, edges with two equivalent O(6)K3NaNbW octahedra, edges with two equivalent O(7)K3NaNbW octahedra,  a faceface with one O(3)K2Na2NbW octahedra,  a faceface with one O(1)K2Na2W2 octahedra,  a faceface with one O(7)K3NaNbW octahedra,  a faceface with one O(5)K3NaW2 octahedra,  a faceface with one O(11)K4NbW octahedra,  a faceface with one O(9)K4W2 octahedra,  a faceface with one O(12)KNa3NbW octahedra, and  a faceface with one O(10)KNa3W2 octahedra. The corner-sharing octahedral tilt angles range from 1-62°. In the sixth O site, O(6) is bonded to one K(2), one K(3), one K(4), one Na(2), one Nb(1), and one W(2) atom to form distorted OK3NaNbW octahedra that share corners with two equivalent O(2)K2Na2NbW octahedra, corners with two equivalent O(3)K2Na2NbW octahedra, corners with two equivalent O(1)K2Na2W2 octahedra, corners with two equivalent O(5)K3NaW2 octahedra, corners with two equivalent O(13)K4Nb2 octahedra, corners with two equivalent O(11)K4NbW octahedra, corners with two equivalent O(12)KNa3NbW octahedra, corners with six equivalent O(7)K3NaNbW octahedra, edges with two equivalent O(5)K3NaW2 octahedra,  a faceface with one O(2)K2Na2NbW octahedra,  a faceface with one O(6)K3NaNbW octahedra,  a faceface with one O(11)K4NbW octahedra,  a faceface with one O(9)K4W2 octahedra,  a faceface with one O(12)KNa3NbW octahedra, and  a faceface with one O(10)KNa3W2 octahedra. The corner-sharing octahedral tilt angles range from 0-62°. In the seventh O site, O(7) is bonded to one K(2), one K(3), one K(4), one Na(2), one Nb(2), and one W(3) atom to form distorted OK3NaNbW octahedra that share corners with two equivalent O(2)K2Na2NbW octahedra, corners with two equivalent O(3)K2Na2NbW octahedra, corners with two equivalent O(11)K4NbW octahedra, corners with two equivalent O(9)K4W2 octahedra, corners with two equivalent O(12)KNa3NbW octahedra, corners with two equivalent O(10)KNa3W2 octahedra, corners with six equivalent O(6)K3NaNbW octahedra, edges with two equivalent O(5)K3NaW2 octahedra,  a faceface with one O(3)K2Na2NbW octahedra,  a faceface with one O(1)K2Na2W2 octahedra,  a faceface with one O(7)K3NaNbW octahedra,  a faceface with one O(5)K3NaW2 octahedra,  a faceface with one O(13)K4Nb2 octahedra,  a faceface with one O(11)K4NbW octahedra, and  a faceface with one O(12)KNa3NbW octahedra. The corner-sharing octahedral tilt angles range from 1-60°. In the eighth O site, O(8) is bonded in a distorted linear geometry to one K(2), one K(3), one K(4), one Na(2), one Nb(1), and one Nb(3) atom. In the ninth O site, O(9) is bonded to one K(1), one K(3), two equivalent K(2), one W(1), and one W(2) atom to form distorted OK4W2 octahedra that share corners with two equivalent O(10)KNa3W2 octahedra, corners with four equivalent O(3)K2Na2NbW octahedra, corners with four equivalent O(7)K3NaNbW octahedra, corners with four equivalent O(13)K4Nb2 octahedra, edges with four equivalent O(11)K4NbW octahedra, faces with two equivalent O(2)K2Na2NbW octahedra, faces with two equivalent O(1)K2Na2W2 octahedra, faces with two equivalent O(6)K3NaNbW octahedra, and faces with two equivalent O(5)K3NaW2 octahedra. The corner-sharing octahedral tilt angles range from 0-60°. In the tenth O site, O(10) is bonded to one K(4), one Na(1), two equivalent Na(2), one W(1), and one W(2) atom to form distorted OKNa3W2 octahedra that share corners with two equivalent O(9)K4W2 octahedra, corners with four equivalent O(3)K2Na2NbW octahedra, corners with four equivalent O(7)K3NaNbW octahedra, edges with four equivalent O(12)KNa3NbW octahedra, faces with two equivalent O(2)K2Na2NbW octahedra, faces with two equivalent O(1)K2Na2W2 octahedra, faces with two equivalent O(6)K3NaNbW octahedra, and faces with two equivalent O(5)K3NaW2 octahedra. The corner-sharing octahedral tilt angles range from 0-60°. In the eleventh O site, O(11) is bonded to one K(1), one K(3), two equivalent K(2), one Nb(1), and one W(3) atom to form distorted OK4NbW octahedra that share corners with two equivalent O(2)K2Na2NbW octahedra, corners with two equivalent O(3)K2Na2NbW octahedra, corners with two equivalent O(1)K2Na2W2 octahedra, corners with two equivalent O(6)K3NaNbW octahedra, corners with two equivalent O(7)K3NaNbW octahedra, corners with two equivalent O(5)K3NaW2 octahedra, corners with two equivalent O(12)KNa3NbW octahedra, corners with four equivalent O(11)K4NbW octahedra, edges with two equivalent O(13)K4Nb2 octahedra, edges with two equivalent O(9)K4W2 octahedra,  a faceface with one O(2)K2Na2NbW octahedra,  a faceface with one O(3)K2Na2NbW octahedra,  a faceface with one O(1)K2Na2W2 octahedra,  a faceface with one O(6)K3NaNbW octahedra,  a faceface with one O(7)K3NaNbW octahedra, and  a faceface with one O(5)K3NaW2 octahedra. The corner-sharing octahedral tilt angles range from 0-61°. In the twelfth O site, O(12) is bonded to one K(4), one Na(1), two equivalent Na(2), one Nb(1), and one W(3) atom to form distorted OKNa3NbW octahedra that share corners with two equivalent O(2)K2Na2NbW octahedra, corners with two equivalent O(3)K2Na2NbW octahedra, corners with two equivalent O(1)K2Na2W2 octahedra, corners with two equivalent O(6)K3NaNbW octahedra, corners with two equivalent O(7)K3NaNbW octahedra, corners with two equivalent O(5)K3NaW2 octahedra, corners with two equivalent O(11)K4NbW octahedra, corners with four equivalent O(12)KNa3NbW octahedra, edges with two equivalent O(10)KNa3W2 octahedra,  a faceface with one O(2)K2Na2NbW octahedra,  a faceface with one O(3)K2Na2NbW octahedra,  a faceface with one O(1)K2Na2W2 octahedra,  a faceface with one O(6)K3NaNbW octahedra,  a faceface with one O(7)K3NaNbW octahedra, and  a faceface with one O(5)K3NaW2 octahedra. The corner-sharing octahedral tilt angles range from 0-61°. In the thirteenth O site, O(13) is bonded to one K(1), one K(3), two equivalent K(2), one Nb(2), and one Nb(3) atom to form distorted OK4Nb2 octahedra that share corners with four equivalent O(2)K2Na2NbW octahedra, corners with four equivalent O(1)K2Na2W2 octahedra, corners with four equivalent O(6)K3NaNbW octahedra, corners with four equivalent O(5)K3NaW2 octahedra, corners with four equivalent O(9)K4W2 octahedra, edges with four equivalent O(11)K4NbW octahedra, faces with two equivalent O(3)K2Na2NbW octahedra, and faces with two equivalent O(7)K3NaNbW octahedra. The corner-sharing octahedral tilt angles range from 1-60°. In the fourteenth O site, O(14) is bonded in a distorted linear geometry to one K(4), one Na(1), two equivalent Na(2), one Nb(2), and one Nb(3) atom.