RbSn2Br5 crystallizes in the tetragonal I4/mcm space group. Rb(1) is bonded in a 10-coordinate geometry to two equivalent Br(2) and eight equivalent Br(1) atoms. Sn(1) is bonded in a 4-coordinate geometry to two equivalent Br(1) and two equivalent Br(2) atoms. There are two inequivalent Br sites. In the first Br site, Br(2) is bonded to two equivalent Rb(1) and four equivalent Sn(1) atoms to form corner-sharing BrRb2Sn4 octahedra. The corner-sharing octahedral tilt angles range from 0-31°. In the second Br site, Br(1) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Rb(1) and one Sn(1) atom.
RbSn2Br5 crystallizes in the tetragonal I4/mcm space group. Rb(1) is bonded in a 10-coordinate geometry to two equivalent Br(2) and eight equivalent Br(1) atoms. Both Rb(1)-Br(2) bond lengths are 3.77 Å. All Rb(1)-Br(1) bond lengths are 3.63 Å. Sn(1) is bonded in a 4-coordinate geometry to two equivalent Br(1) and two equivalent Br(2) atoms. Both Sn(1)-Br(1) bond lengths are 2.74 Å. Both Sn(1)-Br(2) bond lengths are 3.11 Å. There are two inequivalent Br sites. In the first Br site, Br(2) is bonded to two equivalent Rb(1) and four equivalent Sn(1) atoms to form corner-sharing BrRb2Sn4 octahedra. The corner-sharing octahedral tilt angles range from 0-31°. In the second Br site, Br(1) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Rb(1) and one Sn(1) atom.