W5Te3O18 crystallizes in the monoclinic C2 space group. There are six inequivalent W sites. In the first W site, W(1) is bonded in a 6-coordinate geometry to one O(1), one O(10), one O(12), one O(18), one O(2), and one O(9) atom. In the second W site, W(2) is bonded in a 6-coordinate geometry to one O(11), one O(14), one O(15), one O(16), one O(4), and one O(8) atom. In the third W site, W(3) is bonded to one O(12), one O(13), one O(16), one O(2), one O(3), and one O(8) atom to form distorted edge-sharing WO6 octahedra. In the fourth W site, W(4) is bonded to one O(10), one O(11), one O(12), one O(16), one O(17), and one O(5) atom to form a mixture of distorted edge and corner-sharing WO6 octahedra. In the fifth W site, W(5) is bonded to two equivalent O(17), two equivalent O(18), and two equivalent O(6) atoms to form distorted corner-sharing WO6 pentagonal pyramids. The corner-sharing octahedral tilt angles are 34°. In the sixth W site, W(6) is bonded in a 6-coordinate geometry to two equivalent O(3), two equivalent O(4), and two equivalent O(7) atoms. There are three inequivalent Te sites. In the first Te site, Te(1) is bonded in an L-shaped geometry to one O(13) and one O(9) atom. In the second Te site, Te(2) is bonded in a distorted T-shaped geometry to one O(11), one O(2), and one O(6) atom. In the third Te site, Te(3) is bonded in a 3-coordinate geometry to one O(14), one O(5), and one O(7) atom. There are eighteen inequivalent O sites. In the first O site, O(1) is bonded in a single-bond geometry to one W(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one W(1), one W(3), and one Te(2) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one W(3) and one W(6) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one W(2) and one W(6) atom. In the fifth O site, O(5) is bonded in a distorted bent 120 degrees geometry to one W(4) and one Te(3) atom. In the sixth O site, O(6) is bonded in an L-shaped geometry to one W(5) and one Te(2) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to one W(6) and one Te(3) atom. In the eighth O site, O(8) is bonded in a water-like geometry to one W(2) and one W(3) atom. In the ninth O site, O(9) is bonded in a distorted bent 120 degrees geometry to one W(1) and one Te(1) atom. In the tenth O site, O(10) is bonded in a water-like geometry to one W(1) and one W(4) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one W(2), one W(4), and one Te(2) atom. In the twelfth O site, O(12) is bonded in a trigonal non-coplanar geometry to one W(1), one W(3), and one W(4) atom. In the thirteenth O site, O(13) is bonded in a bent 120 degrees geometry to one W(3) and one Te(1) atom. In the fourteenth O site, O(14) is bonded in a bent 150 degrees geometry to one W(2) and one Te(3) atom. In the fifteenth O site, O(15) is bonded in a single-bond geometry to one W(2) atom. In the sixteenth O site, O(16) is bonded in a trigonal non-coplanar geometry to one W(2), one W(3), and one W(4) atom. In the seventeenth O site, O(17) is bonded in a bent 150 degrees geometry to one W(4) and one W(5) atom. In the eighteenth O site, O(18) is bonded in a linear geometry to one W(1) and one W(5) atom.
W5Te3O18 crystallizes in the monoclinic C2 space group. There are six inequivalent W sites. In the first W site, W(1) is bonded in a 6-coordinate geometry to one O(1), one O(10), one O(12), one O(18), one O(2), and one O(9) atom. The W(1)-O(1) bond length is 1.74 Å. The W(1)-O(10) bond length is 1.99 Å. The W(1)-O(12) bond length is 2.13 Å. The W(1)-O(18) bond length is 1.85 Å. The W(1)-O(2) bond length is 2.28 Å. The W(1)-O(9) bond length is 1.97 Å. In the second W site, W(2) is bonded in a 6-coordinate geometry to one O(11), one O(14), one O(15), one O(16), one O(4), and one O(8) atom. The W(2)-O(11) bond length is 2.43 Å. The W(2)-O(14) bond length is 1.91 Å. The W(2)-O(15) bond length is 1.74 Å. The W(2)-O(16) bond length is 2.14 Å. The W(2)-O(4) bond length is 1.91 Å. The W(2)-O(8) bond length is 1.94 Å. In the third W site, W(3) is bonded to one O(12), one O(13), one O(16), one O(2), one O(3), and one O(8) atom to form distorted edge-sharing WO6 octahedra. The W(3)-O(12) bond length is 2.21 Å. The W(3)-O(13) bond length is 1.92 Å. The W(3)-O(16) bond length is 2.05 Å. The W(3)-O(2) bond length is 1.90 Å. The W(3)-O(3) bond length is 1.82 Å. The W(3)-O(8) bond length is 1.98 Å. In the fourth W site, W(4) is bonded to one O(10), one O(11), one O(12), one O(16), one O(17), and one O(5) atom to form a mixture of distorted edge and corner-sharing WO6 octahedra. The W(4)-O(10) bond length is 1.93 Å. The W(4)-O(11) bond length is 1.99 Å. The W(4)-O(12) bond length is 2.07 Å. The W(4)-O(16) bond length is 2.15 Å. The W(4)-O(17) bond length is 1.85 Å. The W(4)-O(5) bond length is 1.86 Å. In the fifth W site, W(5) is bonded to two equivalent O(17), two equivalent O(18), and two equivalent O(6) atoms to form distorted corner-sharing WO6 pentagonal pyramids. The corner-sharing octahedral tilt angles are 34°. Both W(5)-O(17) bond lengths are 2.14 Å. Both W(5)-O(18) bond lengths are 2.03 Å. Both W(5)-O(6) bond lengths are 2.04 Å. In the sixth W site, W(6) is bonded in a 6-coordinate geometry to two equivalent O(3), two equivalent O(4), and two equivalent O(7) atoms. Both W(6)-O(3) bond lengths are 2.25 Å. Both W(6)-O(4) bond lengths are 1.95 Å. Both W(6)-O(7) bond lengths are 1.81 Å. There are three inequivalent Te sites. In the first Te site, Te(1) is bonded in an L-shaped geometry to one O(13) and one O(9) atom. The Te(1)-O(13) bond length is 2.00 Å. The Te(1)-O(9) bond length is 1.93 Å. In the second Te site, Te(2) is bonded in a distorted T-shaped geometry to one O(11), one O(2), and one O(6) atom. The Te(2)-O(11) bond length is 2.10 Å. The Te(2)-O(2) bond length is 2.47 Å. The Te(2)-O(6) bond length is 1.98 Å. In the third Te site, Te(3) is bonded in a 3-coordinate geometry to one O(14), one O(5), and one O(7) atom. The Te(3)-O(14) bond length is 1.97 Å. The Te(3)-O(5) bond length is 2.16 Å. The Te(3)-O(7) bond length is 2.67 Å. There are eighteen inequivalent O sites. In the first O site, O(1) is bonded in a single-bond geometry to one W(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one W(1), one W(3), and one Te(2) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one W(3) and one W(6) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one W(2) and one W(6) atom. In the fifth O site, O(5) is bonded in a distorted bent 120 degrees geometry to one W(4) and one Te(3) atom. In the sixth O site, O(6) is bonded in an L-shaped geometry to one W(5) and one Te(2) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to one W(6) and one Te(3) atom. In the eighth O site, O(8) is bonded in a water-like geometry to one W(2) and one W(3) atom. In the ninth O site, O(9) is bonded in a distorted bent 120 degrees geometry to one W(1) and one Te(1) atom. In the tenth O site, O(10) is bonded in a water-like geometry to one W(1) and one W(4) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one W(2), one W(4), and one Te(2) atom. In the twelfth O site, O(12) is bonded in a trigonal non-coplanar geometry to one W(1), one W(3), and one W(4) atom. In the thirteenth O site, O(13) is bonded in a bent 120 degrees geometry to one W(3) and one Te(1) atom. In the fourteenth O site, O(14) is bonded in a bent 150 degrees geometry to one W(2) and one Te(3) atom. In the fifteenth O site, O(15) is bonded in a single-bond geometry to one W(2) atom. In the sixteenth O site, O(16) is bonded in a trigonal non-coplanar geometry to one W(2), one W(3), and one W(4) atom. In the seventeenth O site, O(17) is bonded in a bent 150 degrees geometry to one W(4) and one W(5) atom. In the eighteenth O site, O(18) is bonded in a linear geometry to one W(1) and one W(5) atom.