Rb2YAuI6 crystallizes in the cubic Fm-3m space group. Rb(1) is bonded to twelve equivalent I(1) atoms to form RbI12 cuboctahedra that share corners with twelve equivalent Rb(1)I12 cuboctahedra, faces with six equivalent Rb(1)I12 cuboctahedra, faces with four equivalent Y(1)I6 octahedra, and faces with four equivalent Au(1)I6 octahedra. Y(1) is bonded to six equivalent I(1) atoms to form YI6 octahedra that share corners with six equivalent Au(1)I6 octahedra and faces with eight equivalent Rb(1)I12 cuboctahedra. The corner-sharing octahedra are not tilted. Au(1) is bonded to six equivalent I(1) atoms to form AuI6 octahedra that share corners with six equivalent Y(1)I6 octahedra and faces with eight equivalent Rb(1)I12 cuboctahedra. The corner-sharing octahedra are not tilted. I(1) is bonded in a 1-coordinate geometry to four equivalent Rb(1), one Y(1), and one Au(1) atom.
Rb2YAuI6 crystallizes in the cubic Fm-3m space group. Rb(1) is bonded to twelve equivalent I(1) atoms to form RbI12 cuboctahedra that share corners with twelve equivalent Rb(1)I12 cuboctahedra, faces with six equivalent Rb(1)I12 cuboctahedra, faces with four equivalent Y(1)I6 octahedra, and faces with four equivalent Au(1)I6 octahedra. All Rb(1)-I(1) bond lengths are 4.28 Å. Y(1) is bonded to six equivalent I(1) atoms to form YI6 octahedra that share corners with six equivalent Au(1)I6 octahedra and faces with eight equivalent Rb(1)I12 cuboctahedra. The corner-sharing octahedra are not tilted. All Y(1)-I(1) bond lengths are 3.03 Å. Au(1) is bonded to six equivalent I(1) atoms to form AuI6 octahedra that share corners with six equivalent Y(1)I6 octahedra and faces with eight equivalent Rb(1)I12 cuboctahedra. The corner-sharing octahedra are not tilted. All Au(1)-I(1) bond lengths are 3.02 Å. I(1) is bonded in a 1-coordinate geometry to four equivalent Rb(1), one Y(1), and one Au(1) atom.