Rb2ScAuI6 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 Sc(1)I6 octahedra, and faces with four equivalent Au(1)I6 octahedra. Sc(1) is bonded to six equivalent I(1) atoms to form ScI6 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 Sc(1)I6 octahedra and faces with eight equivalent Rb(1)I12 cuboctahedra. The corner-sharing octahedra are not tilted. I(1) is bonded to four equivalent Rb(1), one Sc(1), and one Au(1) atom to form a mixture of distorted face, corner, and edge-sharing IRb4ScAu octahedra. The corner-sharing octahedral tilt angles range from 0-60°.
Rb2ScAuI6 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 Sc(1)I6 octahedra, and faces with four equivalent Au(1)I6 octahedra. All Rb(1)-I(1) bond lengths are 4.19 Å. Sc(1) is bonded to six equivalent I(1) atoms to form ScI6 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 Sc(1)-I(1) bond lengths are 2.91 Å. Au(1) is bonded to six equivalent I(1) atoms to form AuI6 octahedra that share corners with six equivalent Sc(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 to four equivalent Rb(1), one Sc(1), and one Au(1) atom to form a mixture of distorted face, corner, and edge-sharing IRb4ScAu octahedra. The corner-sharing octahedral tilt angles range from 0-60°.