CsPO3 crystallizes in the orthorhombic Pnma space group. Cs(1) is bonded in a 6-coordinate geometry to six equivalent O(1) atoms. P(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form corner-sharing PO4 tetrahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to three equivalent Cs(1) and one P(1) atom. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to two equivalent P(1) atoms.
CsPO3 crystallizes in the orthorhombic Pnma space group. Cs(1) is bonded in a 6-coordinate geometry to six equivalent O(1) atoms. There are a spread of Cs(1)-O(1) bond distances ranging from 3.02-3.22 Å. P(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form corner-sharing PO4 tetrahedra. Both P(1)-O(1) bond lengths are 1.49 Å. There is one shorter (1.61 Å) and one longer (1.62 Å) P(1)-O(2) bond length. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to three equivalent Cs(1) and one P(1) atom. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to two equivalent P(1) atoms.