Y6Co2Sn crystallizes in the orthorhombic Immm space group. There are three inequivalent Y sites. In the first Y site, Y(1) is bonded in a 4-coordinate geometry to one Co(1), one Co(2), one Sn(1), and one Sn(2) atom. In the second Y site, Y(2) is bonded in a 5-coordinate geometry to one Co(1), two equivalent Co(2), one Sn(1), and one Sn(2) atom. In the third Y site, Y(3) is bonded in a 4-coordinate geometry to one Co(2), two equivalent Co(1), and one Sn(1) atom. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded in a 9-coordinate geometry to two equivalent Y(1), two equivalent Y(2), four equivalent Y(3), and one Co(1) atom. In the second Co site, Co(2) is bonded in a 9-coordinate geometry to two equivalent Y(1), two equivalent Y(3), four equivalent Y(2), and one Co(2) atom. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a cuboctahedral geometry to four equivalent Y(1), four equivalent Y(2), and four equivalent Y(3) atoms. In the second Sn site, Sn(2) is bonded in a body-centered cubic geometry to four equivalent Y(1) and four equivalent Y(2) atoms.
Y6Co2Sn crystallizes in the orthorhombic Immm space group. There are three inequivalent Y sites. In the first Y site, Y(1) is bonded in a 4-coordinate geometry to one Co(1), one Co(2), one Sn(1), and one Sn(2) atom. The Y(1)-Co(1) bond length is 2.75 Å. The Y(1)-Co(2) bond length is 3.21 Å. The Y(1)-Sn(1) bond length is 3.35 Å. The Y(1)-Sn(2) bond length is 3.09 Å. In the second Y site, Y(2) is bonded in a 5-coordinate geometry to one Co(1), two equivalent Co(2), one Sn(1), and one Sn(2) atom. The Y(2)-Co(1) bond length is 3.20 Å. Both Y(2)-Co(2) bond lengths are 2.95 Å. The Y(2)-Sn(1) bond length is 3.68 Å. The Y(2)-Sn(2) bond length is 3.26 Å. In the third Y site, Y(3) is bonded in a 4-coordinate geometry to one Co(2), two equivalent Co(1), and one Sn(1) atom. The Y(3)-Co(2) bond length is 2.77 Å. Both Y(3)-Co(1) bond lengths are 2.89 Å. The Y(3)-Sn(1) bond length is 3.44 Å. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded in a 9-coordinate geometry to two equivalent Y(1), two equivalent Y(2), four equivalent Y(3), and one Co(1) atom. The Co(1)-Co(1) bond length is 2.69 Å. In the second Co site, Co(2) is bonded in a 9-coordinate geometry to two equivalent Y(1), two equivalent Y(3), four equivalent Y(2), and one Co(2) atom. The Co(2)-Co(2) bond length is 2.24 Å. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a cuboctahedral geometry to four equivalent Y(1), four equivalent Y(2), and four equivalent Y(3) atoms. In the second Sn site, Sn(2) is bonded in a body-centered cubic geometry to four equivalent Y(1) and four equivalent Y(2) atoms.