RbAu5 crystallizes in the hexagonal P6/mmm space group. Rb(1) is bonded in a 18-coordinate geometry to six equivalent Au(1) and twelve equivalent Au(2) atoms. There are two inequivalent Au sites. In the first Au site, Au(1) is bonded in a 9-coordinate geometry to three equivalent Rb(1) and six equivalent Au(2) atoms. In the second Au site, Au(2) is bonded to four equivalent Rb(1), four equivalent Au(1), and four equivalent Au(2) atoms to form a mixture of edge, face, and corner-sharing AuRb4Au8 cuboctahedra.
RbAu5 crystallizes in the hexagonal P6/mmm space group. Rb(1) is bonded in a 18-coordinate geometry to six equivalent Au(1) and twelve equivalent Au(2) atoms. All Rb(1)-Au(1) bond lengths are 3.36 Å. All Rb(1)-Au(2) bond lengths are 3.68 Å. There are two inequivalent Au sites. In the first Au site, Au(1) is bonded in a 9-coordinate geometry to three equivalent Rb(1) and six equivalent Au(2) atoms. All Au(1)-Au(2) bond lengths are 2.81 Å. In the second Au site, Au(2) is bonded to four equivalent Rb(1), four equivalent Au(1), and four equivalent Au(2) atoms to form a mixture of edge, face, and corner-sharing AuRb4Au8 cuboctahedra. All Au(2)-Au(2) bond lengths are 2.91 Å.