Rb2CoH8(CO5)2 crystallizes in the monoclinic P2_1/c space group. Rb(1) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(4), one O(5), and two equivalent O(3) atoms. Co(1) is bonded in an octahedral geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. C(1) is bonded in a trigonal planar geometry to one O(3), one O(4), and one O(5) atom. There are four inequivalent H sites. In the first H site, H(1) is bonded in a distorted single-bond geometry to one O(2) atom. In the second H site, H(2) is bonded in a distorted linear geometry to one O(2) and one O(5) atom. In the third H site, H(3) is bonded in a distorted single-bond geometry to one O(1) and one O(5) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one O(1) atom. There are five inequivalent O sites. In the first O site, O(3) is bonded in a 4-coordinate geometry to two equivalent Rb(1), one Co(1), and one C(1) atom. In the second O site, O(4) is bonded in a distorted single-bond geometry to one Rb(1) and one C(1) atom. In the third O site, O(5) is bonded in a 4-coordinate geometry to one Rb(1), one C(1), one H(2), and one H(3) atom. In the fourth O site, O(1) is bonded in a distorted water-like geometry to one Rb(1), one Co(1), one H(3), and one H(4) atom. In the fifth O site, O(2) is bonded in a distorted water-like geometry to one Rb(1), one Co(1), one H(1), and one H(2) atom.
Rb2CoH8(CO5)2 crystallizes in the monoclinic P2_1/c space group. Rb(1) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(4), one O(5), and two equivalent O(3) atoms. The Rb(1)-O(1) bond length is 3.10 Å. The Rb(1)-O(2) bond length is 2.97 Å. The Rb(1)-O(4) bond length is 2.89 Å. The Rb(1)-O(5) bond length is 2.95 Å. There is one shorter (2.95 Å) and one longer (2.96 Å) Rb(1)-O(3) bond length. Co(1) is bonded in an octahedral geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. Both Co(1)-O(1) bond lengths are 2.17 Å. Both Co(1)-O(2) bond lengths are 2.13 Å. Both Co(1)-O(3) bond lengths are 2.10 Å. C(1) is bonded in a trigonal planar geometry to one O(3), one O(4), and one O(5) atom. The C(1)-O(3) bond length is 1.30 Å. The C(1)-O(4) bond length is 1.30 Å. The C(1)-O(5) bond length is 1.31 Å. There are four inequivalent H sites. In the first H site, H(1) is bonded in a distorted single-bond geometry to one O(2) atom. The H(1)-O(2) bond length is 1.01 Å. In the second H site, H(2) is bonded in a distorted linear geometry to one O(2) and one O(5) atom. The H(2)-O(2) bond length is 1.02 Å. The H(2)-O(5) bond length is 1.57 Å. In the third H site, H(3) is bonded in a distorted single-bond geometry to one O(1) and one O(5) atom. The H(3)-O(1) bond length is 1.01 Å. The H(3)-O(5) bond length is 1.67 Å. In the fourth H site, H(4) is bonded in a single-bond geometry to one O(1) atom. The H(4)-O(1) bond length is 1.00 Å. There are five inequivalent O sites. In the first O site, O(3) is bonded in a 4-coordinate geometry to two equivalent Rb(1), one Co(1), and one C(1) atom. In the second O site, O(4) is bonded in a distorted single-bond geometry to one Rb(1) and one C(1) atom. In the third O site, O(5) is bonded in a 4-coordinate geometry to one Rb(1), one C(1), one H(2), and one H(3) atom. In the fourth O site, O(1) is bonded in a distorted water-like geometry to one Rb(1), one Co(1), one H(3), and one H(4) atom. In the fifth O site, O(2) is bonded in a distorted water-like geometry to one Rb(1), one Co(1), one H(1), and one H(2) atom.