RbMgMoO3 crystallizes in the tetragonal P4/mmm space group. Rb(1) is bonded to two equivalent Mg(1) and four equivalent O(1) atoms to form distorted RbMg2O4 octahedra that share corners with six equivalent Rb(1)Mg2O4 octahedra, corners with eight equivalent Mo(1)O6 octahedra, and edges with four equivalent Rb(1)Mg2O4 octahedra. The corner-sharing octahedral tilt angles range from 0-90°. Mg(1) is bonded in a distorted square co-planar geometry to two equivalent Rb(1) and four equivalent O(2) atoms. Mo(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form MoO6 octahedra that share corners with six equivalent Mo(1)O6 octahedra and corners with eight equivalent Rb(1)Mg2O4 octahedra. The corner-sharing octahedral tilt angles range from 0-90°. There are two inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Rb(1) and two equivalent Mo(1) atoms to form a mixture of corner and edge-sharing ORb4Mo2 octahedra. The corner-sharing octahedra are not tilted. In the second O site, O(2) is bonded in a square co-planar geometry to two equivalent Mg(1) and two equivalent Mo(1) atoms.
RbMgMoO3 crystallizes in the tetragonal P4/mmm space group. Rb(1) is bonded to two equivalent Mg(1) and four equivalent O(1) atoms to form distorted RbMg2O4 octahedra that share corners with six equivalent Rb(1)Mg2O4 octahedra, corners with eight equivalent Mo(1)O6 octahedra, and edges with four equivalent Rb(1)Mg2O4 octahedra. The corner-sharing octahedral tilt angles range from 0-90°. Both Rb(1)-Mg(1) bond lengths are 2.56 Å. All Rb(1)-O(1) bond lengths are 2.97 Å. Mg(1) is bonded in a distorted square co-planar geometry to two equivalent Rb(1) and four equivalent O(2) atoms. All Mg(1)-O(2) bond lengths are 2.10 Å. Mo(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form MoO6 octahedra that share corners with six equivalent Mo(1)O6 octahedra and corners with eight equivalent Rb(1)Mg2O4 octahedra. The corner-sharing octahedral tilt angles range from 0-90°. Both Mo(1)-O(1) bond lengths are 2.56 Å. All Mo(1)-O(2) bond lengths are 2.10 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Rb(1) and two equivalent Mo(1) atoms to form a mixture of corner and edge-sharing ORb4Mo2 octahedra. The corner-sharing octahedra are not tilted. In the second O site, O(2) is bonded in a square co-planar geometry to two equivalent Mg(1) and two equivalent Mo(1) atoms.