CaW2O5 crystallizes in the orthorhombic Pmmn space group. Ca(1) is bonded in a 6-coordinate geometry to two equivalent O(1) and four equivalent O(3) atoms. W(1) is bonded to one O(1), one O(3), and three equivalent O(2) atoms to form a mixture of corner and edge-sharing WO5 trigonal bipyramids. There are three inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Ca(1) and two equivalent W(1) atoms to form corner-sharing OCa2W2 tetrahedra. In the second O site, O(2) is bonded in a 3-coordinate geometry to three equivalent W(1) atoms. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Ca(1) and one W(1) atom.
CaW2O5 crystallizes in the orthorhombic Pmmn space group. Ca(1) is bonded in a 6-coordinate geometry to two equivalent O(1) and four equivalent O(3) atoms. Both Ca(1)-O(1) bond lengths are 2.47 Å. All Ca(1)-O(3) bond lengths are 2.46 Å. W(1) is bonded to one O(1), one O(3), and three equivalent O(2) atoms to form a mixture of corner and edge-sharing WO5 trigonal bipyramids. The W(1)-O(1) bond length is 2.09 Å. The W(1)-O(3) bond length is 1.90 Å. There are two shorter (2.03 Å) and one longer (2.25 Å) W(1)-O(2) bond length. There are three inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Ca(1) and two equivalent W(1) atoms to form corner-sharing OCa2W2 tetrahedra. In the second O site, O(2) is bonded in a 3-coordinate geometry to three equivalent W(1) atoms. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Ca(1) and one W(1) atom.