CsSn2Br5 crystallizes in the tetragonal I4/mcm space group. Cs(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 distorted rectangular see-saw-like 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 Cs(1) and four equivalent Sn(1) atoms to form corner-sharing BrCs2Sn4 octahedra. The corner-sharing octahedral tilt angles range from 0-29°. In the second Br site, Br(1) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Cs(1) and one Sn(1) atom.
CsSn2Br5 crystallizes in the tetragonal I4/mcm space group. Cs(1) is bonded in a 10-coordinate geometry to two equivalent Br(2) and eight equivalent Br(1) atoms. Both Cs(1)-Br(2) bond lengths are 3.94 Å. All Cs(1)-Br(1) bond lengths are 3.76 Å. Sn(1) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Br(1) and two equivalent Br(2) atoms. Both Sn(1)-Br(1) bond lengths are 2.73 Å. Both Sn(1)-Br(2) bond lengths are 3.12 Å. There are two inequivalent Br sites. In the first Br site, Br(2) is bonded to two equivalent Cs(1) and four equivalent Sn(1) atoms to form corner-sharing BrCs2Sn4 octahedra. The corner-sharing octahedral tilt angles range from 0-29°. In the second Br site, Br(1) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Cs(1) and one Sn(1) atom.