Y2Au is Cotunnite structured and crystallizes in the orthorhombic Pnma space group. There are two inequivalent Y sites. In the first Y site, Y(1) is bonded to four equivalent Au(1) atoms to form a mixture of corner and edge-sharing YAu4 tetrahedra. In the second Y site, Y(2) is bonded in a 3-coordinate geometry to three equivalent Au(1) atoms. Au(1) is bonded in a 7-coordinate geometry to three equivalent Y(2) and four equivalent Y(1) atoms.
Y2Au is Cotunnite structured and crystallizes in the orthorhombic Pnma space group. There are two inequivalent Y sites. In the first Y site, Y(1) is bonded to four equivalent Au(1) atoms to form a mixture of corner and edge-sharing YAu4 tetrahedra. There are a spread of Y(1)-Au(1) bond distances ranging from 2.89-3.06 Å. In the second Y site, Y(2) is bonded in a 3-coordinate geometry to three equivalent Au(1) atoms. There is one shorter (2.92 Å) and two longer (3.17 Å) Y(2)-Au(1) bond lengths. Au(1) is bonded in a 7-coordinate geometry to three equivalent Y(2) and four equivalent Y(1) atoms.