Rb3Br2Cl is Caswellsilverite-like structured and crystallizes in the tetragonal I4/mmm space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded to five equivalent Br(1) and one Cl(1) atom to form RbBr5Cl octahedra that share  a cornercorner with one Rb(2)Br2Cl4 octahedra, corners with five equivalent Rb(1)Br5Cl octahedra, edges with four equivalent Rb(2)Br2Cl4 octahedra, and edges with eight equivalent Rb(1)Br5Cl octahedra. The corner-sharing octahedral tilt angles range from 0-2°. In the second Rb site, Rb(2) is bonded to two equivalent Br(1) and four equivalent Cl(1) atoms to form RbBr2Cl4 octahedra that share corners with two equivalent Rb(1)Br5Cl octahedra, corners with four equivalent Rb(2)Br2Cl4 octahedra, edges with four equivalent Rb(2)Br2Cl4 octahedra, and edges with eight equivalent Rb(1)Br5Cl octahedra. The corner-sharing octahedra are not tilted. Br(1) is bonded to one Rb(2) and five equivalent Rb(1) atoms to form BrRb6 octahedra that share  a cornercorner with one Cl(1)Rb6 octahedra, corners with five equivalent Br(1)Rb6 octahedra, edges with four equivalent Cl(1)Rb6 octahedra, and edges with eight equivalent Br(1)Rb6 octahedra. The corner-sharing octahedral tilt angles range from 0-2°. Cl(1) is bonded to two equivalent Rb(1) and four equivalent Rb(2) atoms to form ClRb6 octahedra that share corners with two equivalent Br(1)Rb6 octahedra, corners with four equivalent Cl(1)Rb6 octahedra, edges with four equivalent Cl(1)Rb6 octahedra, and edges with eight equivalent Br(1)Rb6 octahedra. The corner-sharing octahedra are not tilted.
Rb3Br2Cl is Caswellsilverite-like structured and crystallizes in the tetragonal I4/mmm space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded to five equivalent Br(1) and one Cl(1) atom to form RbBr5Cl octahedra that share  a cornercorner with one Rb(2)Br2Cl4 octahedra, corners with five equivalent Rb(1)Br5Cl octahedra, edges with four equivalent Rb(2)Br2Cl4 octahedra, and edges with eight equivalent Rb(1)Br5Cl octahedra. The corner-sharing octahedral tilt angles range from 0-2°. There are four shorter (3.42 Å) and one longer (3.47 Å) Rb(1)-Br(1) bond length. The Rb(1)-Cl(1) bond length is 3.35 Å. In the second Rb site, Rb(2) is bonded to two equivalent Br(1) and four equivalent Cl(1) atoms to form RbBr2Cl4 octahedra that share corners with two equivalent Rb(1)Br5Cl octahedra, corners with four equivalent Rb(2)Br2Cl4 octahedra, edges with four equivalent Rb(2)Br2Cl4 octahedra, and edges with eight equivalent Rb(1)Br5Cl octahedra. The corner-sharing octahedra are not tilted. Both Rb(2)-Br(1) bond lengths are 3.42 Å. All Rb(2)-Cl(1) bond lengths are 3.42 Å. Br(1) is bonded to one Rb(2) and five equivalent Rb(1) atoms to form BrRb6 octahedra that share  a cornercorner with one Cl(1)Rb6 octahedra, corners with five equivalent Br(1)Rb6 octahedra, edges with four equivalent Cl(1)Rb6 octahedra, and edges with eight equivalent Br(1)Rb6 octahedra. The corner-sharing octahedral tilt angles range from 0-2°. Cl(1) is bonded to two equivalent Rb(1) and four equivalent Rb(2) atoms to form ClRb6 octahedra that share corners with two equivalent Br(1)Rb6 octahedra, corners with four equivalent Cl(1)Rb6 octahedra, edges with four equivalent Cl(1)Rb6 octahedra, and edges with eight equivalent Br(1)Rb6 octahedra. The corner-sharing octahedra are not tilted.