RbSO3 crystallizes in the trigonal P321 space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 10-coordinate geometry to two equivalent O(1), four equivalent O(2), and four equivalent O(3) atoms. In the second Rb site, Rb(2) is bonded to two equivalent O(2), two equivalent O(3), and four equivalent O(1) atoms to form corner-sharing RbO8 hexagonal bipyramids. There are three inequivalent S sites. In the first S site, S(1) is bonded in a trigonal non-coplanar geometry to three equivalent O(3) atoms. In the second S site, S(2) is bonded in a distorted trigonal non-coplanar geometry to three equivalent O(2) atoms. In the third S site, S(3) is bonded in a trigonal non-coplanar geometry to three equivalent O(1) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Rb(1), two equivalent Rb(2), and one S(3) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Rb(2), two equivalent Rb(1), and one S(2) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Rb(2), two equivalent Rb(1), and one S(1) atom.
RbSO3 crystallizes in the trigonal P321 space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 10-coordinate geometry to two equivalent O(1), four equivalent O(2), and four equivalent O(3) atoms. Both Rb(1)-O(1) bond lengths are 2.95 Å. There are two shorter (3.10 Å) and two longer (3.44 Å) Rb(1)-O(2) bond lengths. There are two shorter (2.97 Å) and two longer (3.23 Å) Rb(1)-O(3) bond lengths. In the second Rb site, Rb(2) is bonded to two equivalent O(2), two equivalent O(3), and four equivalent O(1) atoms to form corner-sharing RbO8 hexagonal bipyramids. Both Rb(2)-O(2) bond lengths are 2.90 Å. Both Rb(2)-O(3) bond lengths are 2.89 Å. There are two shorter (3.00 Å) and two longer (3.02 Å) Rb(2)-O(1) bond lengths. There are three inequivalent S sites. In the first S site, S(1) is bonded in a trigonal non-coplanar geometry to three equivalent O(3) atoms. All S(1)-O(3) bond lengths are 1.46 Å. In the second S site, S(2) is bonded in a distorted trigonal non-coplanar geometry to three equivalent O(2) atoms. All S(2)-O(2) bond lengths are 1.45 Å. In the third S site, S(3) is bonded in a trigonal non-coplanar geometry to three equivalent O(1) atoms. All S(3)-O(1) bond lengths are 1.46 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Rb(1), two equivalent Rb(2), and one S(3) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Rb(2), two equivalent Rb(1), and one S(2) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Rb(2), two equivalent Rb(1), and one S(1) atom.