La2AuP2O crystallizes in the monoclinic C2/m space group. There are two inequivalent La sites. In the first La site, La(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 La site, La(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 La(1), three equivalent La(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 La(1), four equivalent La(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 La(1), three equivalent La(2), and two equivalent Au(1) atoms. O(1) is bonded to one La(2) and three equivalent La(1) atoms to form a mixture of corner and edge-sharing OLa4 tetrahedra.
La2AuP2O crystallizes in the monoclinic C2/m space group. There are two inequivalent La sites. In the first La site, La(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 La(1)-Au(1) bond lengths are 3.38 Å. Both La(1)-P(1) bond lengths are 3.29 Å. There is one shorter (3.06 Å) and one longer (3.33 Å) La(1)-P(2) bond length. There are two shorter (2.42 Å) and one longer (2.44 Å) La(1)-O(1) bond length. In the second La site, La(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 (3.20 Å) and two longer (3.31 Å) La(2)-Au(1) bond lengths. There are two shorter (3.07 Å) and one longer (3.27 Å) La(2)-P(2) bond length. There are two shorter (3.04 Å) and two longer (3.38 Å) La(2)-P(1) bond lengths. The La(2)-O(1) bond length is 2.42 Å. Au(1) is bonded in a 8-coordinate geometry to two equivalent La(1), three equivalent La(2), one P(1), and two equivalent P(2) atoms. The Au(1)-P(1) bond length is 2.51 Å. Both Au(1)-P(2) bond lengths are 2.44 Å. There are two inequivalent P sites. In the first P site, P(1) is bonded in a 8-coordinate geometry to two equivalent La(1), four equivalent La(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 La(1), three equivalent La(2), and two equivalent Au(1) atoms. O(1) is bonded to one La(2) and three equivalent La(1) atoms to form a mixture of corner and edge-sharing OLa4 tetrahedra.