Nd5Rh4 crystallizes in the orthorhombic Pnma space group. There are three inequivalent Nd sites. In the first Nd site, Nd(1) is bonded in a 6-coordinate geometry to one Rh(3), two equivalent Rh(2), and three equivalent Rh(1) atoms. In the second Nd site, Nd(2) is bonded in a 7-coordinate geometry to one Rh(2), two equivalent Rh(3), and four equivalent Rh(1) atoms. In the third Nd site, Nd(3) is bonded to two equivalent Rh(1), two equivalent Rh(2), and two equivalent Rh(3) atoms to form distorted corner-sharing NdRh6 octahedra. The corner-sharing octahedral tilt angles range from 51-55°. There are three inequivalent Rh sites. In the first Rh site, Rh(3) is bonded in a 9-coordinate geometry to two equivalent Nd(1), two equivalent Nd(3), four equivalent Nd(2), and one Rh(2) atom. In the second Rh site, Rh(1) is bonded in a 8-coordinate geometry to one Nd(3), three equivalent Nd(1), and four equivalent Nd(2) atoms. In the third Rh site, Rh(2) is bonded in a 9-coordinate geometry to two equivalent Nd(2), two equivalent Nd(3), four equivalent Nd(1), and one Rh(3) atom.
Nd5Rh4 crystallizes in the orthorhombic Pnma space group. There are three inequivalent Nd sites. In the first Nd site, Nd(1) is bonded in a 6-coordinate geometry to one Rh(3), two equivalent Rh(2), and three equivalent Rh(1) atoms. The Nd(1)-Rh(3) bond length is 3.08 Å. There is one shorter (2.98 Å) and one longer (3.02 Å) Nd(1)-Rh(2) bond length. There are two shorter (2.86 Å) and one longer (3.03 Å) Nd(1)-Rh(1) bond length. In the second Nd site, Nd(2) is bonded in a 7-coordinate geometry to one Rh(2), two equivalent Rh(3), and four equivalent Rh(1) atoms. The Nd(2)-Rh(2) bond length is 3.21 Å. There is one shorter (3.06 Å) and one longer (3.34 Å) Nd(2)-Rh(3) bond length. There are a spread of Nd(2)-Rh(1) bond distances ranging from 2.96-3.37 Å. In the third Nd site, Nd(3) is bonded to two equivalent Rh(1), two equivalent Rh(2), and two equivalent Rh(3) atoms to form distorted corner-sharing NdRh6 octahedra. The corner-sharing octahedral tilt angles range from 51-55°. Both Nd(3)-Rh(1) bond lengths are 3.18 Å. There is one shorter (2.90 Å) and one longer (3.34 Å) Nd(3)-Rh(2) bond length. There is one shorter (2.77 Å) and one longer (2.99 Å) Nd(3)-Rh(3) bond length. There are three inequivalent Rh sites. In the first Rh site, Rh(3) is bonded in a 9-coordinate geometry to two equivalent Nd(1), two equivalent Nd(3), four equivalent Nd(2), and one Rh(2) atom. The Rh(3)-Rh(2) bond length is 2.69 Å. In the second Rh site, Rh(1) is bonded in a 8-coordinate geometry to one Nd(3), three equivalent Nd(1), and four equivalent Nd(2) atoms. In the third Rh site, Rh(2) is bonded in a 9-coordinate geometry to two equivalent Nd(2), two equivalent Nd(3), four equivalent Nd(1), and one Rh(3) atom.