Cs2Ba2(CO3)3 crystallizes in the cubic I2_13 space group. Cs(1) is bonded in a 6-coordinate geometry to three equivalent O(1) and three equivalent O(2) atoms. Ba(1) is bonded in a 9-coordinate geometry to three equivalent O(1) and six equivalent O(2) atoms. C(1) is bonded in a trigonal planar geometry to one O(1) and two equivalent O(2) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to two equivalent Cs(1), two equivalent Ba(1), and one C(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Cs(1), two equivalent Ba(1), and one C(1) atom.
Cs2Ba2(CO3)3 crystallizes in the cubic I2_13 space group. Cs(1) is bonded in a 6-coordinate geometry to three equivalent O(1) and three equivalent O(2) atoms. All Cs(1)-O(1) bond lengths are 3.16 Å. All Cs(1)-O(2) bond lengths are 3.14 Å. Ba(1) is bonded in a 9-coordinate geometry to three equivalent O(1) and six equivalent O(2) atoms. All Ba(1)-O(1) bond lengths are 3.10 Å. There are three shorter (2.78 Å) and three longer (2.79 Å) Ba(1)-O(2) bond lengths. C(1) is bonded in a trigonal planar geometry to one O(1) and two equivalent O(2) atoms. The C(1)-O(1) bond length is 1.31 Å. Both C(1)-O(2) bond lengths are 1.30 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to two equivalent Cs(1), two equivalent Ba(1), and one C(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Cs(1), two equivalent Ba(1), and one C(1) atom.