K2AuGaI6 crystallizes in the cubic Fm-3m space group. K(1) is bonded to twelve equivalent I(1) atoms to form KI12 cuboctahedra that share corners with twelve equivalent K(1)I12 cuboctahedra, faces with six equivalent K(1)I12 cuboctahedra, faces with four equivalent Au(1)I6 octahedra, and faces with four equivalent Ga(1)I6 octahedra. Au(1) is bonded to six equivalent I(1) atoms to form AuI6 octahedra that share corners with six equivalent Ga(1)I6 octahedra and faces with eight equivalent K(1)I12 cuboctahedra. The corner-sharing octahedra are not tilted. Ga(1) is bonded to six equivalent I(1) atoms to form GaI6 octahedra that share corners with six equivalent Au(1)I6 octahedra and faces with eight equivalent K(1)I12 cuboctahedra. The corner-sharing octahedra are not tilted. I(1) is bonded in a 6-coordinate geometry to four equivalent K(1), one Au(1), and one Ga(1) atom.
K2AuGaI6 crystallizes in the cubic Fm-3m space group. K(1) is bonded to twelve equivalent I(1) atoms to form KI12 cuboctahedra that share corners with twelve equivalent K(1)I12 cuboctahedra, faces with six equivalent K(1)I12 cuboctahedra, faces with four equivalent Au(1)I6 octahedra, and faces with four equivalent Ga(1)I6 octahedra. All K(1)-I(1) bond lengths are 4.12 Å. Au(1) is bonded to six equivalent I(1) atoms to form AuI6 octahedra that share corners with six equivalent Ga(1)I6 octahedra and faces with eight equivalent K(1)I12 cuboctahedra. The corner-sharing octahedra are not tilted. All Au(1)-I(1) bond lengths are 2.94 Å. Ga(1) is bonded to six equivalent I(1) atoms to form GaI6 octahedra that share corners with six equivalent Au(1)I6 octahedra and faces with eight equivalent K(1)I12 cuboctahedra. The corner-sharing octahedra are not tilted. All Ga(1)-I(1) bond lengths are 2.88 Å. I(1) is bonded in a 6-coordinate geometry to four equivalent K(1), one Au(1), and one Ga(1) atom.