Rb4C2H6O9 crystallizes in the monoclinic C2/c space group. There are three inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 11-coordinate geometry to one H(1), two equivalent H(3), one O(3), one O(4), one O(5), two equivalent O(2), and three equivalent O(1) atoms. In the second Rb site, Rb(2) is bonded in a 10-coordinate geometry to two equivalent H(1), two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. In the third Rb site, Rb(3) is bonded in a 10-coordinate geometry to two equivalent H(2), two equivalent O(1), two equivalent O(2), and four equivalent O(4) atoms. C(1) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(3) atom. There are three inequivalent H sites. In the first H site, H(1) is bonded in a distorted single-bond geometry to one Rb(1), one Rb(2), one O(3), and one O(4) atom. In the second H site, H(2) is bonded in a single-bond geometry to one Rb(3) and one O(4) atom. In the third H site, H(3) is bonded in a distorted single-bond geometry to two equivalent Rb(1), one O(3), and one O(5) atom. There are five inequivalent O sites. In the first O site, O(5) is bonded in a water-like geometry to two equivalent Rb(1) and two equivalent H(3) atoms. In the second O site, O(1) is bonded in a distorted single-bond geometry to one Rb(2), one Rb(3), three equivalent Rb(1), and one C(1) atom. In the third O site, O(2) is bonded in a distorted single-bond geometry to one Rb(2), one Rb(3), two equivalent Rb(1), and one C(1) atom. In the fourth O site, O(3) is bonded in a 3-coordinate geometry to one Rb(1), one Rb(2), one C(1), one H(1), and one H(3) atom. In the fifth O site, O(4) is bonded in a water-like geometry to one Rb(1), one Rb(2), two equivalent Rb(3), one H(1), and one H(2) atom.
Rb4C2H6O9 crystallizes in the monoclinic C2/c space group. There are three inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 11-coordinate geometry to one H(1), two equivalent H(3), one O(3), one O(4), one O(5), two equivalent O(2), and three equivalent O(1) atoms. The Rb(1)-H(1) bond length is 2.96 Å. There is one shorter (3.06 Å) and one longer (3.12 Å) Rb(1)-H(3) bond length. The Rb(1)-O(3) bond length is 3.16 Å. The Rb(1)-O(4) bond length is 3.12 Å. The Rb(1)-O(5) bond length is 2.96 Å. There is one shorter (3.04 Å) and one longer (3.12 Å) Rb(1)-O(2) bond length. There are a spread of Rb(1)-O(1) bond distances ranging from 2.98-3.46 Å. In the second Rb site, Rb(2) is bonded in a 10-coordinate geometry to two equivalent H(1), two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. Both Rb(2)-H(1) bond lengths are 2.97 Å. Both Rb(2)-O(1) bond lengths are 2.94 Å. Both Rb(2)-O(2) bond lengths are 3.00 Å. Both Rb(2)-O(3) bond lengths are 3.31 Å. Both Rb(2)-O(4) bond lengths are 3.04 Å. In the third Rb site, Rb(3) is bonded in a 10-coordinate geometry to two equivalent H(2), two equivalent O(1), two equivalent O(2), and four equivalent O(4) atoms. Both Rb(3)-H(2) bond lengths are 2.86 Å. Both Rb(3)-O(1) bond lengths are 2.97 Å. Both Rb(3)-O(2) bond lengths are 2.96 Å. There are two shorter (3.02 Å) and two longer (3.12 Å) Rb(3)-O(4) bond lengths. C(1) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(3) atom. The C(1)-O(1) bond length is 1.29 Å. The C(1)-O(2) bond length is 1.31 Å. The C(1)-O(3) bond length is 1.31 Å. There are three inequivalent H sites. In the first H site, H(1) is bonded in a distorted single-bond geometry to one Rb(1), one Rb(2), one O(3), and one O(4) atom. The H(1)-O(3) bond length is 1.69 Å. The H(1)-O(4) bond length is 1.01 Å. In the second H site, H(2) is bonded in a single-bond geometry to one Rb(3) and one O(4) atom. The H(2)-O(4) bond length is 1.00 Å. In the third H site, H(3) is bonded in a distorted single-bond geometry to two equivalent Rb(1), one O(3), and one O(5) atom. The H(3)-O(3) bond length is 1.67 Å. The H(3)-O(5) bond length is 1.00 Å. There are five inequivalent O sites. In the first O site, O(5) is bonded in a water-like geometry to two equivalent Rb(1) and two equivalent H(3) atoms. In the second O site, O(1) is bonded in a distorted single-bond geometry to one Rb(2), one Rb(3), three equivalent Rb(1), and one C(1) atom. In the third O site, O(2) is bonded in a distorted single-bond geometry to one Rb(2), one Rb(3), two equivalent Rb(1), and one C(1) atom. In the fourth O site, O(3) is bonded in a 3-coordinate geometry to one Rb(1), one Rb(2), one C(1), one H(1), and one H(3) atom. In the fifth O site, O(4) is bonded in a water-like geometry to one Rb(1), one Rb(2), two equivalent Rb(3), one H(1), and one H(2) atom.