Nd5Sb3 crystallizes in the hexagonal P6_3/mcm space group. There are two inequivalent Nd sites. In the first Nd site, Nd(1) is bonded in a 6-coordinate geometry to six equivalent Sb(1) atoms. In the second Nd site, Nd(2) is bonded in a 5-coordinate geometry to five equivalent Sb(1) atoms. Sb(1) is bonded in a 9-coordinate geometry to four equivalent Nd(1) and five equivalent Nd(2) atoms.
Nd5Sb3 crystallizes in the hexagonal P6_3/mcm space group. There are two inequivalent Nd sites. In the first Nd site, Nd(1) is bonded in a 6-coordinate geometry to six equivalent Sb(1) atoms. All Nd(1)-Sb(1) bond lengths are 3.33 Å. In the second Nd site, Nd(2) is bonded in a 5-coordinate geometry to five equivalent Sb(1) atoms. There are a spread of Nd(2)-Sb(1) bond distances ranging from 3.17-3.50 Å. Sb(1) is bonded in a 9-coordinate geometry to four equivalent Nd(1) and five equivalent Nd(2) atoms.