CsSmBr3 is Orthorhombic Perovskite structured and crystallizes in the orthorhombic Pnma space group. Cs(1) is bonded in a 9-coordinate geometry to three equivalent Br(2) and six equivalent Br(1) atoms. Sm(1) is bonded to two equivalent Br(2) and four equivalent Br(1) atoms to form corner-sharing SmBr6 octahedra. The corner-sharing octahedral tilt angles range from 16-19°. There are two inequivalent Br sites. In the first Br site, Br(1) is bonded to three equivalent Cs(1) and two equivalent Sm(1) atoms to form a mixture of distorted edge and corner-sharing BrCs3Sm2 trigonal bipyramids. In the second Br site, Br(2) is bonded in a 5-coordinate geometry to three equivalent Cs(1) and two equivalent Sm(1) atoms.
CsSmBr3 is Orthorhombic Perovskite structured and crystallizes in the orthorhombic Pnma space group. Cs(1) is bonded in a 9-coordinate geometry to three equivalent Br(2) and six equivalent Br(1) atoms. There are a spread of Cs(1)-Br(2) bond distances ranging from 3.78-4.21 Å. There are a spread of Cs(1)-Br(1) bond distances ranging from 3.79-3.99 Å. Sm(1) is bonded to two equivalent Br(2) and four equivalent Br(1) atoms to form corner-sharing SmBr6 octahedra. The corner-sharing octahedral tilt angles range from 16-19°. Both Sm(1)-Br(2) bond lengths are 2.94 Å. All Sm(1)-Br(1) bond lengths are 2.93 Å. There are two inequivalent Br sites. In the first Br site, Br(1) is bonded to three equivalent Cs(1) and two equivalent Sm(1) atoms to form a mixture of distorted edge and corner-sharing BrCs3Sm2 trigonal bipyramids. In the second Br site, Br(2) is bonded in a 5-coordinate geometry to three equivalent Cs(1) and two equivalent Sm(1) atoms.