Rb2WSO4 crystallizes in the trigonal R-3m space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 10-coordinate geometry to four equivalent S(1), three equivalent O(1), and three equivalent O(2) atoms. In the second Rb site, Rb(2) is bonded in a 10-coordinate geometry to one O(2) and nine equivalent O(1) atoms. W(1) is bonded in a distorted tetrahedral geometry to one S(1) and three equivalent O(1) atoms. S(1) is bonded in a 5-coordinate geometry to four equivalent Rb(1) and one W(1) atom. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to one Rb(1), three equivalent Rb(2), and one W(1) atom. In the second O site, O(2) is bonded in a single-bond geometry to one Rb(2) and three equivalent Rb(1) atoms.
Rb2WSO4 crystallizes in the trigonal R-3m space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 10-coordinate geometry to four equivalent S(1), three equivalent O(1), and three equivalent O(2) atoms. There is one shorter (3.56 Å) and three longer (3.68 Å) Rb(1)-S(1) bond lengths. All Rb(1)-O(1) bond lengths are 2.93 Å. All Rb(1)-O(2) bond lengths are 3.61 Å. In the second Rb site, Rb(2) is bonded in a 10-coordinate geometry to one O(2) and nine equivalent O(1) atoms. The Rb(2)-O(2) bond length is 3.10 Å. There are three shorter (2.96 Å) and six longer (3.25 Å) Rb(2)-O(1) bond lengths. W(1) is bonded in a distorted tetrahedral geometry to one S(1) and three equivalent O(1) atoms. The W(1)-S(1) bond length is 2.30 Å. All W(1)-O(1) bond lengths are 1.80 Å. S(1) is bonded in a 5-coordinate geometry to four equivalent Rb(1) and one W(1) atom. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to one Rb(1), three equivalent Rb(2), and one W(1) atom. In the second O site, O(2) is bonded in a single-bond geometry to one Rb(2) and three equivalent Rb(1) atoms.