NbRh2 crystallizes in the monoclinic P2/m space group. Nb(1) is bonded in a 9-coordinate geometry to one Rh(3), two equivalent Rh(2), and six equivalent Rh(1) atoms. There are three inequivalent Rh sites. In the first Rh site, Rh(1) is bonded to six equivalent Nb(1) atoms to form distorted RhNb6 cuboctahedra that share corners with four equivalent Rh(1)Nb6 cuboctahedra, corners with six equivalent Rh(2)Nb4 cuboctahedra, edges with three equivalent Rh(2)Nb4 cuboctahedra, edges with six equivalent Rh(1)Nb6 cuboctahedra, and faces with four equivalent Rh(1)Nb6 cuboctahedra. In the second Rh site, Rh(2) is bonded to four equivalent Nb(1) atoms to form distorted RhNb4 cuboctahedra that share corners with twelve equivalent Rh(1)Nb6 cuboctahedra, edges with two equivalent Rh(2)Nb4 cuboctahedra, and edges with six equivalent Rh(1)Nb6 cuboctahedra. In the third Rh site, Rh(3) is bonded in a distorted linear geometry to two equivalent Nb(1) atoms.
NbRh2 crystallizes in the monoclinic P2/m space group. Nb(1) is bonded in a 9-coordinate geometry to one Rh(3), two equivalent Rh(2), and six equivalent Rh(1) atoms. The Nb(1)-Rh(3) bond length is 2.74 Å. Both Nb(1)-Rh(2) bond lengths are 2.75 Å. There are two shorter (2.78 Å) and four longer (2.80 Å) Nb(1)-Rh(1) bond lengths. There are three inequivalent Rh sites. In the first Rh site, Rh(1) is bonded to six equivalent Nb(1) atoms to form distorted RhNb6 cuboctahedra that share corners with four equivalent Rh(1)Nb6 cuboctahedra, corners with six equivalent Rh(2)Nb4 cuboctahedra, edges with three equivalent Rh(2)Nb4 cuboctahedra, edges with six equivalent Rh(1)Nb6 cuboctahedra, and faces with four equivalent Rh(1)Nb6 cuboctahedra. In the second Rh site, Rh(2) is bonded to four equivalent Nb(1) atoms to form distorted RhNb4 cuboctahedra that share corners with twelve equivalent Rh(1)Nb6 cuboctahedra, edges with two equivalent Rh(2)Nb4 cuboctahedra, and edges with six equivalent Rh(1)Nb6 cuboctahedra. In the third Rh site, Rh(3) is bonded in a distorted linear geometry to two equivalent Nb(1) atoms.