Y2CuIn3 crystallizes in the orthorhombic Pmm2 space group. There are two inequivalent Y sites. In the first Y site, Y(1) is bonded to two equivalent Cu(1), two equivalent In(3), four equivalent In(1), and four equivalent In(2) atoms to form distorted YIn10Cu2 cuboctahedra that share edges with four equivalent Y(1)In10Cu2 cuboctahedra, edges with eight equivalent Y(2)In8Cu4 cuboctahedra, faces with four equivalent Y(1)In10Cu2 cuboctahedra, and faces with four equivalent Y(2)In8Cu4 cuboctahedra. In the second Y site, Y(2) is bonded to four equivalent Cu(1), two equivalent In(1), two equivalent In(2), and four equivalent In(3) atoms to form distorted YIn8Cu4 cuboctahedra that share edges with four equivalent Y(2)In8Cu4 cuboctahedra, edges with eight equivalent Y(1)In10Cu2 cuboctahedra, faces with four equivalent Y(1)In10Cu2 cuboctahedra, and faces with four equivalent Y(2)In8Cu4 cuboctahedra. Cu(1) is bonded in a 9-coordinate geometry to two equivalent Y(1), four equivalent Y(2), one In(3), and two equivalent In(2) atoms. There are three inequivalent In sites. In the first In site, In(1) is bonded in a 9-coordinate geometry to two equivalent Y(2), four equivalent Y(1), one In(2), and two equivalent In(3) atoms. In the second In site, In(2) is bonded in a 9-coordinate geometry to two equivalent Y(2), four equivalent Y(1), two equivalent Cu(1), and one In(1) atom. In the third In site, In(3) is bonded in a 9-coordinate geometry to two equivalent Y(1), four equivalent Y(2), one Cu(1), and two equivalent In(1) atoms.
Y2CuIn3 crystallizes in the orthorhombic Pmm2 space group. There are two inequivalent Y sites. In the first Y site, Y(1) is bonded to two equivalent Cu(1), two equivalent In(3), four equivalent In(1), and four equivalent In(2) atoms to form distorted YIn10Cu2 cuboctahedra that share edges with four equivalent Y(1)In10Cu2 cuboctahedra, edges with eight equivalent Y(2)In8Cu4 cuboctahedra, faces with four equivalent Y(1)In10Cu2 cuboctahedra, and faces with four equivalent Y(2)In8Cu4 cuboctahedra. Both Y(1)-Cu(1) bond lengths are 3.21 Å. Both Y(1)-In(3) bond lengths are 3.52 Å. All Y(1)-In(1) bond lengths are 3.31 Å. All Y(1)-In(2) bond lengths are 3.33 Å. In the second Y site, Y(2) is bonded to four equivalent Cu(1), two equivalent In(1), two equivalent In(2), and four equivalent In(3) atoms to form distorted YIn8Cu4 cuboctahedra that share edges with four equivalent Y(2)In8Cu4 cuboctahedra, edges with eight equivalent Y(1)In10Cu2 cuboctahedra, faces with four equivalent Y(1)In10Cu2 cuboctahedra, and faces with four equivalent Y(2)In8Cu4 cuboctahedra. All Y(2)-Cu(1) bond lengths are 3.30 Å. Both Y(2)-In(1) bond lengths are 3.36 Å. Both Y(2)-In(2) bond lengths are 3.16 Å. All Y(2)-In(3) bond lengths are 3.23 Å. Cu(1) is bonded in a 9-coordinate geometry to two equivalent Y(1), four equivalent Y(2), one In(3), and two equivalent In(2) atoms. The Cu(1)-In(3) bond length is 2.63 Å. Both Cu(1)-In(2) bond lengths are 2.67 Å. There are three inequivalent In sites. In the first In site, In(1) is bonded in a 9-coordinate geometry to two equivalent Y(2), four equivalent Y(1), one In(2), and two equivalent In(3) atoms. The In(1)-In(2) bond length is 2.87 Å. Both In(1)-In(3) bond lengths are 2.87 Å. In the second In site, In(2) is bonded in a 9-coordinate geometry to two equivalent Y(2), four equivalent Y(1), two equivalent Cu(1), and one In(1) atom. In the third In site, In(3) is bonded in a 9-coordinate geometry to two equivalent Y(1), four equivalent Y(2), one Cu(1), and two equivalent In(1) atoms.