Dy2NiSb4 crystallizes in the tetragonal P-4m2 space group. Dy(1) is bonded in a 11-coordinate geometry to two equivalent Ni(1), two equivalent Sb(1), two equivalent Sb(2), and five equivalent Sb(3) atoms. Ni(1) is bonded in a distorted body-centered cubic geometry to four equivalent Dy(1) and four equivalent Sb(3) atoms. There are three inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a 8-coordinate geometry to four equivalent Dy(1) and four equivalent Sb(2) atoms. In the second Sb site, Sb(2) is bonded in a 8-coordinate geometry to four equivalent Dy(1) and four equivalent Sb(1) atoms. In the third Sb site, Sb(3) is bonded in a 7-coordinate geometry to five equivalent Dy(1) and two equivalent Ni(1) atoms.
Dy2NiSb4 crystallizes in the tetragonal P-4m2 space group. Dy(1) is bonded in a 11-coordinate geometry to two equivalent Ni(1), two equivalent Sb(1), two equivalent Sb(2), and five equivalent Sb(3) atoms. Both Dy(1)-Ni(1) bond lengths are 3.08 Å. Both Dy(1)-Sb(1) bond lengths are 3.28 Å. Both Dy(1)-Sb(2) bond lengths are 3.28 Å. There are four shorter (3.21 Å) and one longer (3.39 Å) Dy(1)-Sb(3) bond length. Ni(1) is bonded in a distorted body-centered cubic geometry to four equivalent Dy(1) and four equivalent Sb(3) atoms. All Ni(1)-Sb(3) bond lengths are 2.46 Å. There are three inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a 8-coordinate geometry to four equivalent Dy(1) and four equivalent Sb(2) atoms. All Sb(1)-Sb(2) bond lengths are 3.05 Å. In the second Sb site, Sb(2) is bonded in a 8-coordinate geometry to four equivalent Dy(1) and four equivalent Sb(1) atoms. In the third Sb site, Sb(3) is bonded in a 7-coordinate geometry to five equivalent Dy(1) and two equivalent Ni(1) atoms.