HCO2Cs crystallizes in the orthorhombic Pbcm space group. Cs(1) is bonded to four equivalent O(1) and four equivalent O(2) atoms to form a mixture of face, corner, and edge-sharing CsO8 hexagonal bipyramids. C(1) is bonded in a trigonal planar geometry to one H(1), one O(1), and one O(2) atom. H(1) is bonded in a single-bond geometry to one C(1) atom. There are two inequivalent O sites. In the first O site, O(1) is bonded in a single-bond geometry to four equivalent Cs(1) and one C(1) atom. In the second O site, O(2) is bonded in a single-bond geometry to four equivalent Cs(1) and one C(1) atom.
HCO2Cs crystallizes in the orthorhombic Pbcm space group. Cs(1) is bonded to four equivalent O(1) and four equivalent O(2) atoms to form a mixture of face, corner, and edge-sharing CsO8 hexagonal bipyramids. There are two shorter (3.23 Å) and two longer (3.31 Å) Cs(1)-O(1) bond lengths. There are two shorter (3.20 Å) and two longer (3.32 Å) Cs(1)-O(2) bond lengths. C(1) is bonded in a trigonal planar geometry to one H(1), one O(1), and one O(2) atom. The C(1)-H(1) bond length is 1.12 Å. The C(1)-O(1) bond length is 1.27 Å. The C(1)-O(2) bond length is 1.27 Å. H(1) is bonded in a single-bond geometry to one C(1) atom. There are two inequivalent O sites. In the first O site, O(1) is bonded in a single-bond geometry to four equivalent Cs(1) and one C(1) atom. In the second O site, O(2) is bonded in a single-bond geometry to four equivalent Cs(1) and one C(1) atom.