SmAu3 is beta Cu3Ti structured and crystallizes in the orthorhombic Pmmn space group. Sm(1) is bonded to four equivalent Au(2) and eight equivalent Au(1) atoms to form a mixture of face, corner, and edge-sharing SmAu12 cuboctahedra. There are two inequivalent Au sites. In the first Au site, Au(1) is bonded in a 4-coordinate geometry to four equivalent Sm(1) and four equivalent Au(2) atoms. In the second Au site, Au(2) is bonded in a 12-coordinate geometry to four equivalent Sm(1) and eight equivalent Au(1) atoms.
SmAu3 is beta Cu3Ti structured and crystallizes in the orthorhombic Pmmn space group. Sm(1) is bonded to four equivalent Au(2) and eight equivalent Au(1) atoms to form a mixture of face, corner, and edge-sharing SmAu12 cuboctahedra. There are two shorter (3.05 Å) and two longer (3.21 Å) Sm(1)-Au(2) bond lengths. There are a spread of Sm(1)-Au(1) bond distances ranging from 3.04-3.10 Å. There are two inequivalent Au sites. In the first Au site, Au(1) is bonded in a 4-coordinate geometry to four equivalent Sm(1) and four equivalent Au(2) atoms. There are a spread of Au(1)-Au(2) bond distances ranging from 2.90-3.18 Å. In the second Au site, Au(2) is bonded in a 12-coordinate geometry to four equivalent Sm(1) and eight equivalent Au(1) atoms.