CaBiO2Cl crystallizes in the monoclinic P2_1/m space group. Ca(1) is bonded in a 7-coordinate geometry to one O(1), three equivalent O(2), and three equivalent Cl(1) atoms. Bi(1) is bonded to one O(2) and three equivalent O(1) atoms to form a mixture of distorted corner and edge-sharing BiO4 trigonal pyramids. There are two inequivalent O sites. In the first O site, O(1) is bonded to one Ca(1) and three equivalent Bi(1) atoms to form OCaBi3 tetrahedra that share corners with two equivalent O(2)Ca3Bi tetrahedra, corners with two equivalent O(1)CaBi3 tetrahedra, edges with two equivalent O(2)Ca3Bi tetrahedra, and edges with two equivalent O(1)CaBi3 tetrahedra. In the second O site, O(2) is bonded to three equivalent Ca(1) and one Bi(1) atom to form OCa3Bi tetrahedra that share corners with two equivalent O(2)Ca3Bi tetrahedra, corners with two equivalent O(1)CaBi3 tetrahedra, edges with two equivalent O(2)Ca3Bi tetrahedra, and edges with two equivalent O(1)CaBi3 tetrahedra. Cl(1) is bonded in a 3-coordinate geometry to three equivalent Ca(1) atoms.
CaBiO2Cl crystallizes in the monoclinic P2_1/m space group. Ca(1) is bonded in a 7-coordinate geometry to one O(1), three equivalent O(2), and three equivalent Cl(1) atoms. The Ca(1)-O(1) bond length is 2.53 Å. There are two shorter (2.33 Å) and one longer (2.34 Å) Ca(1)-O(2) bond length. There is one shorter (2.84 Å) and two longer (3.15 Å) Ca(1)-Cl(1) bond lengths. Bi(1) is bonded to one O(2) and three equivalent O(1) atoms to form a mixture of distorted corner and edge-sharing BiO4 trigonal pyramids. The Bi(1)-O(2) bond length is 2.12 Å. There is one shorter (2.24 Å) and two longer (2.29 Å) Bi(1)-O(1) bond lengths. There are two inequivalent O sites. In the first O site, O(1) is bonded to one Ca(1) and three equivalent Bi(1) atoms to form OCaBi3 tetrahedra that share corners with two equivalent O(2)Ca3Bi tetrahedra, corners with two equivalent O(1)CaBi3 tetrahedra, edges with two equivalent O(2)Ca3Bi tetrahedra, and edges with two equivalent O(1)CaBi3 tetrahedra. In the second O site, O(2) is bonded to three equivalent Ca(1) and one Bi(1) atom to form OCa3Bi tetrahedra that share corners with two equivalent O(2)Ca3Bi tetrahedra, corners with two equivalent O(1)CaBi3 tetrahedra, edges with two equivalent O(2)Ca3Bi tetrahedra, and edges with two equivalent O(1)CaBi3 tetrahedra. Cl(1) is bonded in a 3-coordinate geometry to three equivalent Ca(1) atoms.