Ca2WSnO6 crystallizes in the monoclinic P2_1/c space group. Ca(1) is bonded in a 8-coordinate geometry to two equivalent O(3), three equivalent O(1), and three equivalent O(2) atoms. W(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form WO6 octahedra that share corners with six equivalent Sn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 37-45°. Sn(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form SnO6 octahedra that share corners with six equivalent W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 37-45°. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to three equivalent Ca(1), one W(1), and one Sn(1) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to three equivalent Ca(1), one W(1), and one Sn(1) atom. In the third O site, O(3) is bonded in a distorted see-saw-like geometry to two equivalent Ca(1), one W(1), and one Sn(1) atom.
Ca2WSnO6 crystallizes in the monoclinic P2_1/c space group. Ca(1) is bonded in a 8-coordinate geometry to two equivalent O(3), three equivalent O(1), and three equivalent O(2) atoms. There is one shorter (2.33 Å) and one longer (2.41 Å) Ca(1)-O(3) bond length. There are a spread of Ca(1)-O(1) bond distances ranging from 2.35-3.08 Å. There are a spread of Ca(1)-O(2) bond distances ranging from 2.34-2.92 Å. W(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form WO6 octahedra that share corners with six equivalent Sn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 37-45°. Both W(1)-O(1) bond lengths are 1.97 Å. Both W(1)-O(2) bond lengths are 1.95 Å. Both W(1)-O(3) bond lengths are 1.97 Å. Sn(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form SnO6 octahedra that share corners with six equivalent W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 37-45°. Both Sn(1)-O(1) bond lengths are 2.48 Å. Both Sn(1)-O(2) bond lengths are 2.39 Å. Both Sn(1)-O(3) bond lengths are 2.50 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to three equivalent Ca(1), one W(1), and one Sn(1) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to three equivalent Ca(1), one W(1), and one Sn(1) atom. In the third O site, O(3) is bonded in a distorted see-saw-like geometry to two equivalent Ca(1), one W(1), and one Sn(1) atom.