MgAu5 crystallizes in the trigonal R32 space group. Mg(1) is bonded to six equivalent Au(1) and six equivalent Au(2) atoms to form a mixture of corner and edge-sharing MgAu12 cuboctahedra. There are two inequivalent Au sites. In the first Au site, Au(1) is bonded in a distorted bent 150 degrees geometry to two equivalent Mg(1) atoms. In the second Au site, Au(2) is bonded in a distorted trigonal planar geometry to three equivalent Mg(1) atoms.
MgAu5 crystallizes in the trigonal R32 space group. Mg(1) is bonded to six equivalent Au(1) and six equivalent Au(2) atoms to form a mixture of corner and edge-sharing MgAu12 cuboctahedra. All Mg(1)-Au(1) bond lengths are 2.92 Å. All Mg(1)-Au(2) bond lengths are 2.90 Å. There are two inequivalent Au sites. In the first Au site, Au(1) is bonded in a distorted bent 150 degrees geometry to two equivalent Mg(1) atoms. In the second Au site, Au(2) is bonded in a distorted trigonal planar geometry to three equivalent Mg(1) atoms.