RbAu(SO4)2 crystallizes in the triclinic P-1 space group. Rb(1) is bonded to two equivalent O(4), four equivalent O(1), and six equivalent O(2) atoms to form RbO12 cuboctahedra that share corners with four equivalent S(1)O4 tetrahedra, edges with four equivalent Rb(1)O12 cuboctahedra, edges with four equivalent S(1)O4 tetrahedra, and faces with two equivalent Rb(1)O12 cuboctahedra. Au(1) is bonded in a square co-planar geometry to two equivalent O(3) and two equivalent O(4) atoms. S(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form SO4 tetrahedra that share corners with two equivalent Rb(1)O12 cuboctahedra and edges with two equivalent Rb(1)O12 cuboctahedra. There are four inequivalent O sites. In the first O site, O(1) is bonded in a single-bond geometry to two equivalent Rb(1) and one S(1) atom. In the second O site, O(2) is bonded in a single-bond geometry to three equivalent Rb(1) and one S(1) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Au(1) and one S(1) atom. In the fourth O site, O(4) is bonded in a 2-coordinate geometry to one Rb(1), one Au(1), and one S(1) atom.
RbAu(SO4)2 crystallizes in the triclinic P-1 space group. Rb(1) is bonded to two equivalent O(4), four equivalent O(1), and six equivalent O(2) atoms to form RbO12 cuboctahedra that share corners with four equivalent S(1)O4 tetrahedra, edges with four equivalent Rb(1)O12 cuboctahedra, edges with four equivalent S(1)O4 tetrahedra, and faces with two equivalent Rb(1)O12 cuboctahedra. Both Rb(1)-O(4) bond lengths are 3.13 Å. There are two shorter (3.16 Å) and two longer (3.36 Å) Rb(1)-O(1) bond lengths. There are a spread of Rb(1)-O(2) bond distances ranging from 3.10-3.34 Å. Au(1) is bonded in a square co-planar geometry to two equivalent O(3) and two equivalent O(4) atoms. Both Au(1)-O(3) bond lengths are 2.04 Å. Both Au(1)-O(4) bond lengths are 2.04 Å. S(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form SO4 tetrahedra that share corners with two equivalent Rb(1)O12 cuboctahedra and edges with two equivalent Rb(1)O12 cuboctahedra. The S(1)-O(1) bond length is 1.45 Å. The S(1)-O(2) bond length is 1.45 Å. The S(1)-O(3) bond length is 1.55 Å. The S(1)-O(4) bond length is 1.56 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded in a single-bond geometry to two equivalent Rb(1) and one S(1) atom. In the second O site, O(2) is bonded in a single-bond geometry to three equivalent Rb(1) and one S(1) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Au(1) and one S(1) atom. In the fourth O site, O(4) is bonded in a 2-coordinate geometry to one Rb(1), one Au(1), and one S(1) atom.