Ce2Ni12P7 crystallizes in the hexagonal P-6 space group. There are two inequivalent Ce sites. In the first Ce site, Ce(1) is bonded in a 15-coordinate geometry to three equivalent Ni(1), six equivalent Ni(4), and six equivalent P(2) atoms. In the second Ce site, Ce(2) is bonded in a 18-coordinate geometry to three equivalent Ni(2), three equivalent Ni(4), six equivalent Ni(1), and six equivalent P(1) atoms. There are four inequivalent Ni sites. In the first Ni site, Ni(1) is bonded to one Ce(1), two equivalent Ce(2), two equivalent P(1), and two equivalent P(2) atoms to form distorted NiCe3P4 tetrahedra that share corners with two equivalent Ni(2)CeP4 tetrahedra, corners with six equivalent Ni(1)Ce3P4 tetrahedra, edges with two equivalent Ni(1)Ce3P4 tetrahedra, edges with two equivalent Ni(2)CeP4 tetrahedra, faces with two equivalent Ni(1)Ce3P4 tetrahedra, and faces with two equivalent Ni(2)CeP4 tetrahedra. In the second Ni site, Ni(2) is bonded to one Ce(2), one P(2), one P(3), and two equivalent P(1) atoms to form distorted NiCeP4 tetrahedra that share corners with two equivalent Ni(1)Ce3P4 tetrahedra, corners with six equivalent Ni(2)CeP4 tetrahedra, edges with two equivalent Ni(1)Ce3P4 tetrahedra, and faces with two equivalent Ni(1)Ce3P4 tetrahedra. In the third Ni site, Ni(3) is bonded in a 5-coordinate geometry to one P(1), two equivalent P(2), and two equivalent P(3) atoms. In the fourth Ni site, Ni(4) is bonded in a 4-coordinate geometry to one Ce(2), two equivalent Ce(1), two equivalent P(1), and two equivalent P(2) atoms. There are three inequivalent P sites. In the first P site, P(1) is bonded in a 9-coordinate geometry to two equivalent Ce(2), one Ni(3), two equivalent Ni(1), two equivalent Ni(2), and two equivalent Ni(4) atoms. In the second P site, P(2) is bonded in a 9-coordinate geometry to two equivalent Ce(1), one Ni(2), two equivalent Ni(1), two equivalent Ni(3), and two equivalent Ni(4) atoms. In the third P site, P(3) is bonded in a 9-coordinate geometry to three equivalent Ni(2) and six equivalent Ni(3) atoms.
Ce2Ni12P7 crystallizes in the hexagonal P-6 space group. There are two inequivalent Ce sites. In the first Ce site, Ce(1) is bonded in a 15-coordinate geometry to three equivalent Ni(1), six equivalent Ni(4), and six equivalent P(2) atoms. All Ce(1)-Ni(1) bond lengths are 3.12 Å. All Ce(1)-Ni(4) bond lengths are 2.97 Å. All Ce(1)-P(2) bond lengths are 2.92 Å. In the second Ce site, Ce(2) is bonded in a 18-coordinate geometry to three equivalent Ni(2), three equivalent Ni(4), six equivalent Ni(1), and six equivalent P(1) atoms. All Ce(2)-Ni(2) bond lengths are 3.09 Å. All Ce(2)-Ni(4) bond lengths are 3.20 Å. All Ce(2)-Ni(1) bond lengths are 3.04 Å. All Ce(2)-P(1) bond lengths are 2.93 Å. There are four inequivalent Ni sites. In the first Ni site, Ni(1) is bonded to one Ce(1), two equivalent Ce(2), two equivalent P(1), and two equivalent P(2) atoms to form distorted NiCe3P4 tetrahedra that share corners with two equivalent Ni(2)CeP4 tetrahedra, corners with six equivalent Ni(1)Ce3P4 tetrahedra, edges with two equivalent Ni(1)Ce3P4 tetrahedra, edges with two equivalent Ni(2)CeP4 tetrahedra, faces with two equivalent Ni(1)Ce3P4 tetrahedra, and faces with two equivalent Ni(2)CeP4 tetrahedra. There is one shorter (2.28 Å) and one longer (2.38 Å) Ni(1)-P(1) bond length. Both Ni(1)-P(2) bond lengths are 2.30 Å. In the second Ni site, Ni(2) is bonded to one Ce(2), one P(2), one P(3), and two equivalent P(1) atoms to form distorted NiCeP4 tetrahedra that share corners with two equivalent Ni(1)Ce3P4 tetrahedra, corners with six equivalent Ni(2)CeP4 tetrahedra, edges with two equivalent Ni(1)Ce3P4 tetrahedra, and faces with two equivalent Ni(1)Ce3P4 tetrahedra. The Ni(2)-P(2) bond length is 2.22 Å. The Ni(2)-P(3) bond length is 2.15 Å. Both Ni(2)-P(1) bond lengths are 2.32 Å. In the third Ni site, Ni(3) is bonded in a 5-coordinate geometry to one P(1), two equivalent P(2), and two equivalent P(3) atoms. The Ni(3)-P(1) bond length is 2.28 Å. Both Ni(3)-P(2) bond lengths are 2.55 Å. Both Ni(3)-P(3) bond lengths are 2.51 Å. In the fourth Ni site, Ni(4) is bonded in a 4-coordinate geometry to one Ce(2), two equivalent Ce(1), two equivalent P(1), and two equivalent P(2) atoms. Both Ni(4)-P(1) bond lengths are 2.33 Å. There is one shorter (2.27 Å) and one longer (2.28 Å) Ni(4)-P(2) bond length. There are three inequivalent P sites. In the first P site, P(1) is bonded in a 9-coordinate geometry to two equivalent Ce(2), one Ni(3), two equivalent Ni(1), two equivalent Ni(2), and two equivalent Ni(4) atoms. In the second P site, P(2) is bonded in a 9-coordinate geometry to two equivalent Ce(1), one Ni(2), two equivalent Ni(1), two equivalent Ni(3), and two equivalent Ni(4) atoms. In the third P site, P(3) is bonded in a 9-coordinate geometry to three equivalent Ni(2) and six equivalent Ni(3) atoms.