RbIn(MoO4)2 crystallizes in the trigonal P-3m1 space group. Rb(1) is bonded to six equivalent O(1) and six equivalent O(2) atoms to form RbO12 cuboctahedra that share edges with six equivalent Rb(1)O12 cuboctahedra, edges with six equivalent Mo(1)O4 tetrahedra, and faces with two equivalent In(1)O6 octahedra. Mo(1) is bonded to one O(2) and three equivalent O(1) atoms to form MoO4 tetrahedra that share corners with three equivalent In(1)O6 octahedra and edges with three equivalent Rb(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 19°. In(1) is bonded to six equivalent O(1) atoms to form InO6 octahedra that share corners with six equivalent Mo(1)O4 tetrahedra and faces with two equivalent Rb(1)O12 cuboctahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Rb(1), one Mo(1), and one In(1) atom. In the second O site, O(2) is bonded in a single-bond geometry to three equivalent Rb(1) and one Mo(1) atom.
RbIn(MoO4)2 crystallizes in the trigonal P-3m1 space group. Rb(1) is bonded to six equivalent O(1) and six equivalent O(2) atoms to form RbO12 cuboctahedra that share edges with six equivalent Rb(1)O12 cuboctahedra, edges with six equivalent Mo(1)O4 tetrahedra, and faces with two equivalent In(1)O6 octahedra. All Rb(1)-O(1) bond lengths are 3.01 Å. All Rb(1)-O(2) bond lengths are 3.38 Å. Mo(1) is bonded to one O(2) and three equivalent O(1) atoms to form MoO4 tetrahedra that share corners with three equivalent In(1)O6 octahedra and edges with three equivalent Rb(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 19°. The Mo(1)-O(2) bond length is 1.72 Å. All Mo(1)-O(1) bond lengths are 1.78 Å. In(1) is bonded to six equivalent O(1) atoms to form InO6 octahedra that share corners with six equivalent Mo(1)O4 tetrahedra and faces with two equivalent Rb(1)O12 cuboctahedra. All In(1)-O(1) bond lengths are 2.13 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Rb(1), one Mo(1), and one In(1) atom. In the second O site, O(2) is bonded in a single-bond geometry to three equivalent Rb(1) and one Mo(1) atom.