CsSbH4O5 crystallizes in the triclinic P-1 space group. Cs(1) is bonded in a 4-coordinate geometry to one O(4), one O(5), and two equivalent O(1) atoms. Sb(1) is bonded to one O(2), one O(3), one O(4), one O(5), and two equivalent O(1) atoms to form edge-sharing SbO6 octahedra. There are four inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(2) atom. In the second H site, H(2) is bonded in a single-bond geometry to one O(3) atom. In the third H site, H(3) is bonded in a single-bond geometry to one O(4) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one O(5) atom. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted water-like geometry to two equivalent Cs(1) and two equivalent Sb(1) atoms. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Sb(1) and one H(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Sb(1) and one H(2) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one Cs(1), one Sb(1), and one H(3) atom. In the fifth O site, O(5) is bonded in a 1-coordinate geometry to one Cs(1), one Sb(1), and one H(4) atom.
CsSbH4O5 crystallizes in the triclinic P-1 space group. Cs(1) is bonded in a 4-coordinate geometry to one O(4), one O(5), and two equivalent O(1) atoms. The Cs(1)-O(4) bond length is 3.21 Å. The Cs(1)-O(5) bond length is 3.06 Å. There is one shorter (3.11 Å) and one longer (3.23 Å) Cs(1)-O(1) bond length. Sb(1) is bonded to one O(2), one O(3), one O(4), one O(5), and two equivalent O(1) atoms to form edge-sharing SbO6 octahedra. The Sb(1)-O(2) bond length is 2.05 Å. The Sb(1)-O(3) bond length is 2.03 Å. The Sb(1)-O(4) bond length is 2.01 Å. The Sb(1)-O(5) bond length is 2.00 Å. Both Sb(1)-O(1) bond lengths are 2.02 Å. There are four inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(2) atom. The H(1)-O(2) bond length is 0.98 Å. In the second H site, H(2) is bonded in a single-bond geometry to one O(3) atom. The H(2)-O(3) bond length is 0.99 Å. In the third H site, H(3) is bonded in a single-bond geometry to one O(4) atom. The H(3)-O(4) bond length is 1.00 Å. In the fourth H site, H(4) is bonded in a single-bond geometry to one O(5) atom. The H(4)-O(5) bond length is 1.00 Å. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted water-like geometry to two equivalent Cs(1) and two equivalent Sb(1) atoms. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Sb(1) and one H(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Sb(1) and one H(2) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one Cs(1), one Sb(1), and one H(3) atom. In the fifth O site, O(5) is bonded in a 1-coordinate geometry to one Cs(1), one Sb(1), and one H(4) atom.