Cs2AgAlBr6 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 Ag(1)Br6 octahedra, and faces with four equivalent Al(1)Br6 octahedra. Ag(1) is bonded to six equivalent Br(1) atoms to form AgBr6 octahedra that share corners with six equivalent Al(1)Br6 octahedra and faces with eight equivalent Cs(1)Br12 cuboctahedra. The corner-sharing octahedra are not tilted. Al(1) is bonded to six equivalent Br(1) atoms to form AlBr6 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. Br(1) is bonded to four equivalent Cs(1), one Ag(1), and one Al(1) atom to form a mixture of distorted corner, edge, and face-sharing BrCs4AlAg octahedra. The corner-sharing octahedral tilt angles range from 0-60°.
Cs2AgAlBr6 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 Ag(1)Br6 octahedra, and faces with four equivalent Al(1)Br6 octahedra. All Cs(1)-Br(1) bond lengths are 3.87 Å. Ag(1) is bonded to six equivalent Br(1) atoms to form AgBr6 octahedra that share corners with six equivalent Al(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 2.91 Å. Al(1) is bonded to six equivalent Br(1) atoms to form AlBr6 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 Al(1)-Br(1) bond lengths are 2.56 Å. Br(1) is bonded to four equivalent Cs(1), one Ag(1), and one Al(1) atom to form a mixture of distorted corner, edge, and face-sharing BrCs4AlAg octahedra. The corner-sharing octahedral tilt angles range from 0-60°.