Dy4Ni12Sn25 crystallizes in the cubic Im-3 space group. Dy(1) is bonded in a 18-coordinate geometry to six equivalent Ni(1), six equivalent Sn(1), and six equivalent Sn(2) atoms. Ni(1) is bonded in a 8-coordinate geometry to two equivalent Dy(1), three equivalent Sn(1), and three equivalent Sn(2) atoms. There are three inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 5-coordinate geometry to two equivalent Dy(1), three equivalent Ni(1), and one Sn(3) atom. In the second Sn site, Sn(2) is bonded in a 3-coordinate geometry to two equivalent Dy(1) and three equivalent Ni(1) atoms. In the third Sn site, Sn(3) is bonded in a cuboctahedral geometry to twelve equivalent Sn(1) atoms.
Dy4Ni12Sn25 crystallizes in the cubic Im-3 space group. Dy(1) is bonded in a 18-coordinate geometry to six equivalent Ni(1), six equivalent Sn(1), and six equivalent Sn(2) atoms. All Dy(1)-Ni(1) bond lengths are 3.27 Å. All Dy(1)-Sn(1) bond lengths are 3.33 Å. All Dy(1)-Sn(2) bond lengths are 3.63 Å. Ni(1) is bonded in a 8-coordinate geometry to two equivalent Dy(1), three equivalent Sn(1), and three equivalent Sn(2) atoms. There is one shorter (2.53 Å) and two longer (2.61 Å) Ni(1)-Sn(1) bond lengths. There is one shorter (2.56 Å) and two longer (2.68 Å) Ni(1)-Sn(2) bond lengths. There are three inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 5-coordinate geometry to two equivalent Dy(1), three equivalent Ni(1), and one Sn(3) atom. The Sn(1)-Sn(3) bond length is 3.33 Å. In the second Sn site, Sn(2) is bonded in a 3-coordinate geometry to two equivalent Dy(1) and three equivalent Ni(1) atoms. In the third Sn site, Sn(3) is bonded in a cuboctahedral geometry to twelve equivalent Sn(1) atoms.