NdSbO4 crystallizes in the monoclinic P2_1/c space group. Nd(1) is bonded in a 8-coordinate geometry to one O(2), one O(4), three equivalent O(1), and three equivalent O(3) atoms. Sb(1) is bonded to one O(1), one O(3), two equivalent O(2), and two equivalent O(4) atoms to form corner-sharing SbO6 octahedra. The corner-sharing octahedral tilt angles range from 35-44°. There are four inequivalent O sites. In the first O site, O(1) is bonded to three equivalent Nd(1) and one Sb(1) atom to form a mixture of distorted edge and corner-sharing ONd3Sb tetrahedra. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to one Nd(1) and two equivalent Sb(1) atoms. In the third O site, O(3) is bonded in a 4-coordinate geometry to three equivalent Nd(1) and one Sb(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Nd(1) and two equivalent Sb(1) atoms.
NdSbO4 crystallizes in the monoclinic P2_1/c space group. Nd(1) is bonded in a 8-coordinate geometry to one O(2), one O(4), three equivalent O(1), and three equivalent O(3) atoms. The Nd(1)-O(2) bond length is 2.45 Å. The Nd(1)-O(4) bond length is 2.68 Å. There are a spread of Nd(1)-O(1) bond distances ranging from 2.34-2.55 Å. There are a spread of Nd(1)-O(3) bond distances ranging from 2.32-2.87 Å. Sb(1) is bonded to one O(1), one O(3), two equivalent O(2), and two equivalent O(4) atoms to form corner-sharing SbO6 octahedra. The corner-sharing octahedral tilt angles range from 35-44°. The Sb(1)-O(1) bond length is 2.00 Å. The Sb(1)-O(3) bond length is 1.94 Å. There is one shorter (2.00 Å) and one longer (2.02 Å) Sb(1)-O(2) bond length. There is one shorter (1.98 Å) and one longer (2.03 Å) Sb(1)-O(4) bond length. There are four inequivalent O sites. In the first O site, O(1) is bonded to three equivalent Nd(1) and one Sb(1) atom to form a mixture of distorted edge and corner-sharing ONd3Sb tetrahedra. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to one Nd(1) and two equivalent Sb(1) atoms. In the third O site, O(3) is bonded in a 4-coordinate geometry to three equivalent Nd(1) and one Sb(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Nd(1) and two equivalent Sb(1) atoms.