Cs2RbAuBr6 is (Cubic) Perovskite-derived structured and crystallizes in the cubic Fm-3m space group. Cs(1) is bonded to twelve equivalent Br(1) atoms to form CsBr12 cuboctahedra that share corners with twelve equivalent Cs(1)Br12 cuboctahedra, faces with six equivalent Cs(1)Br12 cuboctahedra, faces with four equivalent Rb(1)Br6 octahedra, and faces with four equivalent Au(1)Br6 octahedra. Rb(1) is bonded to six equivalent Br(1) atoms to form RbBr6 octahedra that share corners with six equivalent Au(1)Br6 octahedra and faces with eight equivalent Cs(1)Br12 cuboctahedra. The corner-sharing octahedra are not tilted. Au(1) is bonded to six equivalent Br(1) atoms to form AuBr6 octahedra that share corners with six equivalent Rb(1)Br6 octahedra and faces with eight equivalent Cs(1)Br12 cuboctahedra. The corner-sharing octahedra are not tilted. Br(1) is bonded in a distorted linear geometry to four equivalent Cs(1), one Rb(1), and one Au(1) atom.
Cs2RbAuBr6 is (Cubic) Perovskite-derived structured and crystallizes in the cubic Fm-3m space group. Cs(1) is bonded to twelve equivalent Br(1) atoms to form CsBr12 cuboctahedra that share corners with twelve equivalent Cs(1)Br12 cuboctahedra, faces with six equivalent Cs(1)Br12 cuboctahedra, faces with four equivalent Rb(1)Br6 octahedra, and faces with four equivalent Au(1)Br6 octahedra. All Cs(1)-Br(1) bond lengths are 4.21 Å. Rb(1) is bonded to six equivalent Br(1) atoms to form RbBr6 octahedra that share corners with six equivalent Au(1)Br6 octahedra and faces with eight equivalent Cs(1)Br12 cuboctahedra. The corner-sharing octahedra are not tilted. All Rb(1)-Br(1) bond lengths are 3.27 Å. Au(1) is bonded to six equivalent Br(1) atoms to form AuBr6 octahedra that share corners with six equivalent Rb(1)Br6 octahedra and faces with eight equivalent Cs(1)Br12 cuboctahedra. The corner-sharing octahedra are not tilted. All Au(1)-Br(1) bond lengths are 2.67 Å. Br(1) is bonded in a distorted linear geometry to four equivalent Cs(1), one Rb(1), and one Au(1) atom.