Nd2AuP2O crystallizes in the monoclinic C2/m space group. There are two inequivalent Nd sites. In the first Nd site, Nd(1) is bonded in a 3-coordinate geometry to two equivalent Au(1), two equivalent P(1), two equivalent P(2), and three equivalent O(1) atoms. In the second Nd site, Nd(2) is bonded in a distorted single-bond geometry to three equivalent Au(1), three equivalent P(2), four equivalent P(1), and one O(1) atom. Au(1) is bonded in a 8-coordinate geometry to two equivalent Nd(1), three equivalent Nd(2), one P(1), and two equivalent P(2) atoms. There are two inequivalent P sites. In the first P site, P(1) is bonded in a 8-coordinate geometry to two equivalent Nd(1), four equivalent Nd(2), one Au(1), and one P(1) atom. In the second P site, P(2) is bonded in a 7-coordinate geometry to two equivalent Nd(1), three equivalent Nd(2), and two equivalent Au(1) atoms. O(1) is bonded to one Nd(2) and three equivalent Nd(1) atoms to form a mixture of corner and edge-sharing ONd4 tetrahedra.
Nd2AuP2O crystallizes in the monoclinic C2/m space group. There are two inequivalent Nd sites. In the first Nd site, Nd(1) is bonded in a 3-coordinate geometry to two equivalent Au(1), two equivalent P(1), two equivalent P(2), and three equivalent O(1) atoms. Both Nd(1)-Au(1) bond lengths are 3.34 Å. Both Nd(1)-P(1) bond lengths are 3.23 Å. There is one shorter (2.99 Å) and one longer (3.30 Å) Nd(1)-P(2) bond length. There are two shorter (2.37 Å) and one longer (2.40 Å) Nd(1)-O(1) bond length. In the second Nd site, Nd(2) is bonded in a distorted single-bond geometry to three equivalent Au(1), three equivalent P(2), four equivalent P(1), and one O(1) atom. There is one shorter (3.16 Å) and two longer (3.27 Å) Nd(2)-Au(1) bond lengths. There are two shorter (3.02 Å) and one longer (3.25 Å) Nd(2)-P(2) bond length. There are two shorter (2.98 Å) and two longer (3.36 Å) Nd(2)-P(1) bond lengths. The Nd(2)-O(1) bond length is 2.39 Å. Au(1) is bonded in a 8-coordinate geometry to two equivalent Nd(1), three equivalent Nd(2), one P(1), and two equivalent P(2) atoms. The Au(1)-P(1) bond length is 2.47 Å. Both Au(1)-P(2) bond lengths are 2.43 Å. There are two inequivalent P sites. In the first P site, P(1) is bonded in a 8-coordinate geometry to two equivalent Nd(1), four equivalent Nd(2), one Au(1), and one P(1) atom. The P(1)-P(1) bond length is 2.22 Å. In the second P site, P(2) is bonded in a 7-coordinate geometry to two equivalent Nd(1), three equivalent Nd(2), and two equivalent Au(1) atoms. O(1) is bonded to one Nd(2) and three equivalent Nd(1) atoms to form a mixture of corner and edge-sharing ONd4 tetrahedra.