BaO11Cl2 crystallizes in the hexagonal P6_3/m space group. Ba(1) is bonded to six equivalent O(2) and six equivalent O(3) atoms to form distorted BaO12 cuboctahedra that share corners with six equivalent Cl(1)O4 tetrahedra and faces with two equivalent Ba(1)O12 cuboctahedra. There are three inequivalent O sites. In the first O site, O(1) is bonded in a single-bond geometry to one Cl(1) atom. In the second O site, O(2) is bonded in a 2-coordinate geometry to one Ba(1) and one Cl(1) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to two equivalent Ba(1) and two equivalent O(3) atoms. Cl(1) is bonded to one O(1) and three equivalent O(2) atoms to form ClO4 tetrahedra that share corners with three equivalent Ba(1)O12 cuboctahedra.
BaO11Cl2 crystallizes in the hexagonal P6_3/m space group. Ba(1) is bonded to six equivalent O(2) and six equivalent O(3) atoms to form distorted BaO12 cuboctahedra that share corners with six equivalent Cl(1)O4 tetrahedra and faces with two equivalent Ba(1)O12 cuboctahedra. All Ba(1)-O(2) bond lengths are 2.79 Å. All Ba(1)-O(3) bond lengths are 2.99 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded in a single-bond geometry to one Cl(1) atom. The O(1)-Cl(1) bond length is 1.44 Å. In the second O site, O(2) is bonded in a 2-coordinate geometry to one Ba(1) and one Cl(1) atom. The O(2)-Cl(1) bond length is 1.47 Å. In the third O site, O(3) is bonded in a 4-coordinate geometry to two equivalent Ba(1) and two equivalent O(3) atoms. Both O(3)-O(3) bond lengths are 1.47 Å. Cl(1) is bonded to one O(1) and three equivalent O(2) atoms to form ClO4 tetrahedra that share corners with three equivalent Ba(1)O12 cuboctahedra.