CsAgBr2 crystallizes in the tetragonal P4/nmm space group. Cs(1) is bonded in a 5-coordinate geometry to five equivalent Br(2) atoms. Ag(1) is bonded in a 5-coordinate geometry to one Br(2) and four equivalent Br(1) atoms. There are two inequivalent Br sites. In the first Br site, Br(1) is bonded in a 4-coordinate geometry to four equivalent Ag(1) atoms. In the second Br site, Br(2) is bonded to five equivalent Cs(1) and one Ag(1) atom to form a mixture of distorted edge and corner-sharing BrCs5Ag octahedra. The corner-sharing octahedral tilt angles are 20°.
CsAgBr2 crystallizes in the tetragonal P4/nmm space group. Cs(1) is bonded in a 5-coordinate geometry to five equivalent Br(2) atoms. There is one shorter (3.61 Å) and four longer (3.81 Å) Cs(1)-Br(2) bond lengths. Ag(1) is bonded in a 5-coordinate geometry to one Br(2) and four equivalent Br(1) atoms. The Ag(1)-Br(2) bond length is 2.63 Å. All Ag(1)-Br(1) bond lengths are 2.84 Å. There are two inequivalent Br sites. In the first Br site, Br(1) is bonded in a 4-coordinate geometry to four equivalent Ag(1) atoms. In the second Br site, Br(2) is bonded to five equivalent Cs(1) and one Ag(1) atom to form a mixture of distorted edge and corner-sharing BrCs5Ag octahedra. The corner-sharing octahedral tilt angles are 20°.