Dy2NiSn6 crystallizes in the orthorhombic Cmmm space group. Dy(1) is bonded in a 10-coordinate geometry to two equivalent Sn(1), two equivalent Sn(3), and six equivalent Sn(2) atoms. Ni(1) is bonded in a body-centered cubic geometry to four equivalent Sn(1) and four equivalent Sn(3) atoms. There are three inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 9-coordinate geometry to two equivalent Dy(1), two equivalent Ni(1), one Sn(1), and four equivalent Sn(3) atoms. In the second Sn site, Sn(2) is bonded in a 8-coordinate geometry to six equivalent Dy(1) and two equivalent Sn(2) atoms. In the third Sn site, Sn(3) is bonded in a 4-coordinate geometry to two equivalent Dy(1), two equivalent Ni(1), and four equivalent Sn(1) atoms.
Dy2NiSn6 crystallizes in the orthorhombic Cmmm space group. Dy(1) is bonded in a 10-coordinate geometry to two equivalent Sn(1), two equivalent Sn(3), and six equivalent Sn(2) atoms. Both Dy(1)-Sn(1) bond lengths are 3.27 Å. Both Dy(1)-Sn(3) bond lengths are 3.28 Å. There are four shorter (3.16 Å) and two longer (3.46 Å) Dy(1)-Sn(2) bond lengths. Ni(1) is bonded in a body-centered cubic geometry to four equivalent Sn(1) and four equivalent Sn(3) atoms. All Ni(1)-Sn(1) bond lengths are 2.69 Å. All Ni(1)-Sn(3) bond lengths are 2.68 Å. There are three inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 9-coordinate geometry to two equivalent Dy(1), two equivalent Ni(1), one Sn(1), and four equivalent Sn(3) atoms. The Sn(1)-Sn(1) bond length is 3.13 Å. All Sn(1)-Sn(3) bond lengths are 3.08 Å. In the second Sn site, Sn(2) is bonded in a 8-coordinate geometry to six equivalent Dy(1) and two equivalent Sn(2) atoms. Both Sn(2)-Sn(2) bond lengths are 2.93 Å. In the third Sn site, Sn(3) is bonded in a 4-coordinate geometry to two equivalent Dy(1), two equivalent Ni(1), and four equivalent Sn(1) atoms.