Cs2CeAgBr6 is (Cubic) Perovskite-derived structured and crystallizes in the cubic Fm-3m space group. Cs(1) is bonded to twelve equivalent Br(1) atoms to form CsBr12 cuboctahedra that share corners with twelve equivalent Cs(1)Br12 cuboctahedra, faces with six equivalent Cs(1)Br12 cuboctahedra, faces with four equivalent Ce(1)Br6 octahedra, and faces with four equivalent Ag(1)Br6 octahedra. Ce(1) is bonded to six equivalent Br(1) atoms to form CeBr6 octahedra that share corners with six equivalent Ag(1)Br6 octahedra and faces with eight equivalent Cs(1)Br12 cuboctahedra. The corner-sharing octahedra are not tilted. Ag(1) is bonded to six equivalent Br(1) atoms to form AgBr6 octahedra that share corners with six equivalent Ce(1)Br6 octahedra and faces with eight equivalent Cs(1)Br12 cuboctahedra. The corner-sharing octahedra are not tilted. Br(1) is bonded to four equivalent Cs(1), one Ce(1), and one Ag(1) atom to form a mixture of distorted corner, edge, and face-sharing BrCs4CeAg octahedra. The corner-sharing octahedral tilt angles range from 0-60°.
Cs2CeAgBr6 is (Cubic) Perovskite-derived structured and crystallizes in the cubic Fm-3m space group. Cs(1) is bonded to twelve equivalent Br(1) atoms to form CsBr12 cuboctahedra that share corners with twelve equivalent Cs(1)Br12 cuboctahedra, faces with six equivalent Cs(1)Br12 cuboctahedra, faces with four equivalent Ce(1)Br6 octahedra, and faces with four equivalent Ag(1)Br6 octahedra. All Cs(1)-Br(1) bond lengths are 4.10 Å. Ce(1) is bonded to six equivalent Br(1) atoms to form CeBr6 octahedra that share corners with six equivalent Ag(1)Br6 octahedra and faces with eight equivalent Cs(1)Br12 cuboctahedra. The corner-sharing octahedra are not tilted. All Ce(1)-Br(1) bond lengths are 2.90 Å. Ag(1) is bonded to six equivalent Br(1) atoms to form AgBr6 octahedra that share corners with six equivalent Ce(1)Br6 octahedra and faces with eight equivalent Cs(1)Br12 cuboctahedra. The corner-sharing octahedra are not tilted. All Ag(1)-Br(1) bond lengths are 2.89 Å. Br(1) is bonded to four equivalent Cs(1), one Ce(1), and one Ag(1) atom to form a mixture of distorted corner, edge, and face-sharing BrCs4CeAg octahedra. The corner-sharing octahedral tilt angles range from 0-60°.