Ce2AuP2O crystallizes in the monoclinic C2/m space group. There are two inequivalent Ce sites. In the first Ce site, Ce(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 Ce site, Ce(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 Ce(1), three equivalent Ce(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 Ce(1), four equivalent Ce(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 Ce(1), three equivalent Ce(2), and two equivalent Au(1) atoms. O(1) is bonded to one Ce(2) and three equivalent Ce(1) atoms to form a mixture of edge and corner-sharing OCe4 tetrahedra.
Ce2AuP2O crystallizes in the monoclinic C2/m space group. There are two inequivalent Ce sites. In the first Ce site, Ce(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 Ce(1)-Au(1) bond lengths are 3.27 Å. Both Ce(1)-P(1) bond lengths are 3.18 Å. There is one shorter (2.93 Å) and one longer (3.27 Å) Ce(1)-P(2) bond length. There is one shorter (2.37 Å) and two longer (2.38 Å) Ce(1)-O(1) bond lengths. In the second Ce site, Ce(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 (3.23 Å) Ce(2)-Au(1) bond lengths. There are two shorter (2.98 Å) and one longer (3.24 Å) Ce(2)-P(2) bond length. There are two shorter (2.94 Å) and two longer (3.31 Å) Ce(2)-P(1) bond lengths. The Ce(2)-O(1) bond length is 2.36 Å. Au(1) is bonded in a 8-coordinate geometry to two equivalent Ce(1), three equivalent Ce(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 2.41 Å. There are two inequivalent P sites. In the first P site, P(1) is bonded in a 8-coordinate geometry to two equivalent Ce(1), four equivalent Ce(2), one Au(1), and one P(1) atom. The P(1)-P(1) bond length is 2.21 Å. In the second P site, P(2) is bonded in a 7-coordinate geometry to two equivalent Ce(1), three equivalent Ce(2), and two equivalent Au(1) atoms. O(1) is bonded to one Ce(2) and three equivalent Ce(1) atoms to form a mixture of edge and corner-sharing OCe4 tetrahedra.