Ca2WBiO6 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 Bi(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 36-43°. Bi(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form BiO6 octahedra that share corners with six equivalent W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 36-43°. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to three equivalent Ca(1), one W(1), and one Bi(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 Bi(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 Bi(1) atom.
Ca2WBiO6 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 (2.32 Å) and one longer (2.40 Å) Ca(1)-O(3) bond length. There are a spread of Ca(1)-O(1) bond distances ranging from 2.35-3.04 Å. There are a spread of Ca(1)-O(2) bond distances ranging from 2.37-2.94 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 Bi(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 36-43°. Both W(1)-O(1) bond lengths are 2.05 Å. Both W(1)-O(2) bond lengths are 1.96 Å. Both W(1)-O(3) bond lengths are 2.06 Å. Bi(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form BiO6 octahedra that share corners with six equivalent W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 36-43°. Both Bi(1)-O(1) bond lengths are 2.37 Å. Both Bi(1)-O(2) bond lengths are 2.37 Å. Both Bi(1)-O(3) bond lengths are 2.39 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to three equivalent Ca(1), one W(1), and one Bi(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 Bi(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 Bi(1) atom.