Y2Au2Sn crystallizes in the tetragonal P4_2/mnm space group. There are two inequivalent Y sites. In the first Y site, Y(1) is bonded in a 6-coordinate geometry to six equivalent Au(1) and four equivalent Sn(1) atoms. In the second Y site, Y(2) is bonded in a 6-coordinate geometry to six equivalent Au(1) and four equivalent Sn(1) atoms. Au(1) is bonded in a 8-coordinate geometry to three equivalent Y(1), three equivalent Y(2), and two equivalent Sn(1) atoms. Sn(1) is bonded to four equivalent Y(1), four equivalent Y(2), and four equivalent Au(1) atoms to form a mixture of distorted face and corner-sharing SnY8Au4 cuboctahedra.
Y2Au2Sn crystallizes in the tetragonal P4_2/mnm space group. There are two inequivalent Y sites. In the first Y site, Y(1) is bonded in a 6-coordinate geometry to six equivalent Au(1) and four equivalent Sn(1) atoms. There are two shorter (2.95 Å) and four longer (3.11 Å) Y(1)-Au(1) bond lengths. All Y(1)-Sn(1) bond lengths are 3.55 Å. In the second Y site, Y(2) is bonded in a 6-coordinate geometry to six equivalent Au(1) and four equivalent Sn(1) atoms. There are two shorter (2.99 Å) and four longer (3.03 Å) Y(2)-Au(1) bond lengths. All Y(2)-Sn(1) bond lengths are 3.47 Å. Au(1) is bonded in a 8-coordinate geometry to three equivalent Y(1), three equivalent Y(2), and two equivalent Sn(1) atoms. Both Au(1)-Sn(1) bond lengths are 3.14 Å. Sn(1) is bonded to four equivalent Y(1), four equivalent Y(2), and four equivalent Au(1) atoms to form a mixture of distorted face and corner-sharing SnY8Au4 cuboctahedra.