RbSO4 crystallizes in the monoclinic P2_1 space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 9-coordinate geometry to one O(1), one O(2), one O(5), one O(6), one O(7), two equivalent O(3), and two equivalent O(4) atoms. In the second Rb site, Rb(2) is bonded in a 9-coordinate geometry to one O(1), one O(3), one O(4), one O(6), one O(8), two equivalent O(5), and two equivalent O(7) atoms. There are two inequivalent S sites. In the first S site, S(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(4) atom. In the second S site, S(2) is bonded in a tetrahedral geometry to one O(5), one O(6), one O(7), and one O(8) atom. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Rb(1), one Rb(2), and one S(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Rb(1) and one S(1) 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. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one Rb(2), two equivalent Rb(1), and one S(1) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Rb(1), two equivalent Rb(2), and one S(2) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one Rb(1), one Rb(2), and one S(2) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to one Rb(1), two equivalent Rb(2), and one S(2) atom. In the eighth O site, O(8) is bonded in a single-bond geometry to one Rb(2) and one S(2) atom.
RbSO4 crystallizes in the monoclinic P2_1 space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 9-coordinate geometry to one O(1), one O(2), one O(5), one O(6), one O(7), two equivalent O(3), and two equivalent O(4) atoms. The Rb(1)-O(1) bond length is 3.34 Å. The Rb(1)-O(2) bond length is 3.03 Å. The Rb(1)-O(5) bond length is 3.09 Å. The Rb(1)-O(6) bond length is 3.00 Å. The Rb(1)-O(7) bond length is 3.00 Å. There is one shorter (3.01 Å) and one longer (3.31 Å) Rb(1)-O(3) bond length. There is one shorter (3.11 Å) and one longer (3.19 Å) Rb(1)-O(4) bond length. In the second Rb site, Rb(2) is bonded in a 9-coordinate geometry to one O(1), one O(3), one O(4), one O(6), one O(8), two equivalent O(5), and two equivalent O(7) atoms. The Rb(2)-O(1) bond length is 2.93 Å. The Rb(2)-O(3) bond length is 3.09 Å. The Rb(2)-O(4) bond length is 3.09 Å. The Rb(2)-O(6) bond length is 3.24 Å. The Rb(2)-O(8) bond length is 3.08 Å. There is one shorter (3.07 Å) and one longer (3.17 Å) Rb(2)-O(5) bond length. There is one shorter (3.07 Å) and one longer (3.33 Å) Rb(2)-O(7) bond length. There are two inequivalent S sites. In the first S site, 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 1.50 Å. The S(1)-O(2) bond length is 1.49 Å. The S(1)-O(3) bond length is 1.49 Å. The S(1)-O(4) bond length is 1.48 Å. In the second S site, S(2) is bonded in a tetrahedral geometry to one O(5), one O(6), one O(7), and one O(8) atom. The S(2)-O(5) bond length is 1.49 Å. The S(2)-O(6) bond length is 1.50 Å. The S(2)-O(7) bond length is 1.48 Å. The S(2)-O(8) bond length is 1.49 Å. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Rb(1), one Rb(2), and one S(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Rb(1) and one S(1) 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. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one Rb(2), two equivalent Rb(1), and one S(1) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Rb(1), two equivalent Rb(2), and one S(2) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one Rb(1), one Rb(2), and one S(2) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to one Rb(1), two equivalent Rb(2), and one S(2) atom. In the eighth O site, O(8) is bonded in a single-bond geometry to one Rb(2) and one S(2) atom.