Cs2CeO3 crystallizes in the orthorhombic Cmc2_1 space group. Cs(1) is bonded in a 6-coordinate geometry to two equivalent O(2) and four equivalent O(1) atoms. Ce(1) is bonded in a 5-coordinate geometry to one O(2) and four equivalent O(1) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 6-coordinate geometry to four equivalent Cs(1) and two equivalent Ce(1) atoms. In the second O site, O(2) is bonded in a 1-coordinate geometry to four equivalent Cs(1) and one Ce(1) atom.
Cs2CeO3 crystallizes in the orthorhombic Cmc2_1 space group. Cs(1) is bonded in a 6-coordinate geometry to two equivalent O(2) and four equivalent O(1) atoms. There is one shorter (2.97 Å) and one longer (3.40 Å) Cs(1)-O(2) bond length. There are a spread of Cs(1)-O(1) bond distances ranging from 3.08-3.28 Å. Ce(1) is bonded in a 5-coordinate geometry to one O(2) and four equivalent O(1) atoms. The Ce(1)-O(2) bond length is 2.03 Å. There are two shorter (2.25 Å) and two longer (2.26 Å) Ce(1)-O(1) bond lengths. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 6-coordinate geometry to four equivalent Cs(1) and two equivalent Ce(1) atoms. In the second O site, O(2) is bonded in a 1-coordinate geometry to four equivalent Cs(1) and one Ce(1) atom.