K2YAgBr6 crystallizes in the cubic Fm-3m space group. K(1) is bonded to twelve equivalent Br(1) atoms to form distorted KBr12 cuboctahedra that share corners with twelve equivalent K(1)Br12 cuboctahedra, faces with six equivalent K(1)Br12 cuboctahedra, faces with four equivalent Y(1)Br6 octahedra, and faces with four equivalent Ag(1)Br6 octahedra. Y(1) is bonded to six equivalent Br(1) atoms to form YBr6 octahedra that share corners with six equivalent Ag(1)Br6 octahedra and faces with eight equivalent K(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 Y(1)Br6 octahedra and faces with eight equivalent K(1)Br12 cuboctahedra. The corner-sharing octahedra are not tilted. Br(1) is bonded in a linear geometry to four equivalent K(1), one Y(1), and one Ag(1) atom.
K2YAgBr6 crystallizes in the cubic Fm-3m space group. K(1) is bonded to twelve equivalent Br(1) atoms to form distorted KBr12 cuboctahedra that share corners with twelve equivalent K(1)Br12 cuboctahedra, faces with six equivalent K(1)Br12 cuboctahedra, faces with four equivalent Y(1)Br6 octahedra, and faces with four equivalent Ag(1)Br6 octahedra. All K(1)-Br(1) bond lengths are 3.99 Å. Y(1) is bonded to six equivalent Br(1) atoms to form YBr6 octahedra that share corners with six equivalent Ag(1)Br6 octahedra and faces with eight equivalent K(1)Br12 cuboctahedra. The corner-sharing octahedra are not tilted. All Y(1)-Br(1) bond lengths are 2.79 Å. Ag(1) is bonded to six equivalent Br(1) atoms to form AgBr6 octahedra that share corners with six equivalent Y(1)Br6 octahedra and faces with eight equivalent K(1)Br12 cuboctahedra. The corner-sharing octahedra are not tilted. All Ag(1)-Br(1) bond lengths are 2.85 Å. Br(1) is bonded in a linear geometry to four equivalent K(1), one Y(1), and one Ag(1) atom.