Rb3H(SO4)2 crystallizes in the monoclinic C2/c space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 10-coordinate geometry to one O(3), three equivalent O(1), three equivalent O(2), and three equivalent O(4) atoms. In the second Rb site, Rb(2) is bonded in a 12-coordinate geometry to two equivalent H(1), two equivalent O(1), two equivalent O(2), two equivalent O(4), and four equivalent O(3) atoms. H(1) is bonded in a linear geometry to two equivalent Rb(2) and two equivalent O(3) atoms. S(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(4) atom. There are four inequivalent O sites. In the first O site, O(3) is bonded in a distorted water-like geometry to one Rb(1), two equivalent Rb(2), one H(1), and one S(1) atom. In the second O site, O(4) is bonded in a distorted single-bond geometry to one Rb(2), three equivalent Rb(1), and one S(1) atom. In the third O site, O(1) is bonded in a distorted single-bond geometry to one Rb(2), three equivalent Rb(1), and one S(1) atom. In the fourth O site, O(2) is bonded in a distorted single-bond geometry to one Rb(2), three equivalent Rb(1), and one S(1) atom.
Rb3H(SO4)2 crystallizes in the monoclinic C2/c space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 10-coordinate geometry to one O(3), three equivalent O(1), three equivalent O(2), and three equivalent O(4) atoms. The Rb(1)-O(3) bond length is 3.06 Å. There are a spread of Rb(1)-O(1) bond distances ranging from 2.99-3.50 Å. There are a spread of Rb(1)-O(2) bond distances ranging from 2.93-3.03 Å. There are a spread of Rb(1)-O(4) bond distances ranging from 2.90-3.09 Å. In the second Rb site, Rb(2) is bonded in a 12-coordinate geometry to two equivalent H(1), two equivalent O(1), two equivalent O(2), two equivalent O(4), and four equivalent O(3) atoms. Both Rb(2)-H(1) bond lengths are 2.92 Å. Both Rb(2)-O(1) bond lengths are 2.84 Å. Both Rb(2)-O(2) bond lengths are 2.94 Å. Both Rb(2)-O(4) bond lengths are 2.97 Å. There are two shorter (3.16 Å) and two longer (3.17 Å) Rb(2)-O(3) bond lengths. H(1) is bonded in a linear geometry to two equivalent Rb(2) and two equivalent O(3) atoms. Both H(1)-O(3) bond lengths are 1.21 Å. S(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(4) atom. The S(1)-O(1) bond length is 1.45 Å. The S(1)-O(2) bond length is 1.46 Å. The S(1)-O(3) bond length is 1.54 Å. The S(1)-O(4) bond length is 1.46 Å. There are four inequivalent O sites. In the first O site, O(3) is bonded in a distorted water-like geometry to one Rb(1), two equivalent Rb(2), one H(1), and one S(1) atom. In the second O site, O(4) is bonded in a distorted single-bond geometry to one Rb(2), three equivalent Rb(1), and one S(1) atom. In the third O site, O(1) is bonded in a distorted single-bond geometry to one Rb(2), three equivalent Rb(1), and one S(1) atom. In the fourth O site, O(2) is bonded in a distorted single-bond geometry to one Rb(2), three equivalent Rb(1), and one S(1) atom.