RbH(CO2)2 crystallizes in the monoclinic P2_1/c space group. Rb(1) is bonded in a 8-coordinate geometry to one O(1), one O(3), three equivalent O(2), and three equivalent O(4) atoms. There are two inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one O(1) and one O(2) atom. In the second C site, C(2) is bonded in a distorted bent 120 degrees geometry to one O(3) and one O(4) atom. H(1) is bonded in a linear geometry to one O(1) and one O(3) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Rb(1), one C(1), and one H(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to three equivalent Rb(1) and one C(1) atom. In the third O site, O(3) is bonded in a distorted water-like geometry to one Rb(1), one C(2), and one H(1) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to three equivalent Rb(1) and one C(2) atom.
RbH(CO2)2 crystallizes in the monoclinic P2_1/c space group. Rb(1) is bonded in a 8-coordinate geometry to one O(1), one O(3), three equivalent O(2), and three equivalent O(4) atoms. The Rb(1)-O(1) bond length is 2.90 Å. The Rb(1)-O(3) bond length is 3.09 Å. There are a spread of Rb(1)-O(2) bond distances ranging from 2.96-3.00 Å. There are a spread of Rb(1)-O(4) bond distances ranging from 2.94-3.51 Å. There are two inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one O(1) and one O(2) atom. The C(1)-O(1) bond length is 1.28 Å. The C(1)-O(2) bond length is 1.25 Å. In the second C site, C(2) is bonded in a distorted bent 120 degrees geometry to one O(3) and one O(4) atom. The C(2)-O(3) bond length is 1.32 Å. The C(2)-O(4) bond length is 1.23 Å. H(1) is bonded in a linear geometry to one O(1) and one O(3) atom. The H(1)-O(1) bond length is 1.44 Å. The H(1)-O(3) bond length is 1.08 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Rb(1), one C(1), and one H(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to three equivalent Rb(1) and one C(1) atom. In the third O site, O(3) is bonded in a distorted water-like geometry to one Rb(1), one C(2), and one H(1) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to three equivalent Rb(1) and one C(2) atom.