Co7NiP4 crystallizes in the monoclinic Pm space group. There are seven inequivalent Co sites. In the first Co site, Co(1) is bonded to one P(1), one P(2), and two equivalent P(3) atoms to form a mixture of distorted corner and edge-sharing CoP4 tetrahedra. In the second Co site, Co(2) is bonded to one P(1), one P(2), and two equivalent P(4) atoms to form a mixture of distorted corner and edge-sharing CoP4 tetrahedra. In the third Co site, Co(3) is bonded to one P(3), one P(4), and two equivalent P(1) atoms to form a mixture of distorted corner and edge-sharing CoP4 tetrahedra. In the fourth Co site, Co(4) is bonded to one P(3), one P(4), and two equivalent P(2) atoms to form a mixture of distorted corner and edge-sharing CoP4 tetrahedra. In the fifth Co site, Co(5) is bonded in a 5-coordinate geometry to one P(1), two equivalent P(3), and two equivalent P(4) atoms. In the sixth Co site, Co(6) is bonded in a 5-coordinate geometry to one P(4), two equivalent P(1), and two equivalent P(2) atoms. In the seventh Co site, Co(7) is bonded in a 5-coordinate geometry to one P(3), two equivalent P(1), and two equivalent P(2) atoms. Ni(1) is bonded in a 3-coordinate geometry to one P(2), two equivalent P(3), and two equivalent P(4) atoms. There are four inequivalent P sites. In the first P site, P(1) is bonded in a 9-coordinate geometry to one Co(1), one Co(2), one Co(5), two equivalent Co(3), two equivalent Co(6), and two equivalent Co(7) atoms. In the second P site, P(2) is bonded in a 9-coordinate geometry to one Co(1), one Co(2), two equivalent Co(4), two equivalent Co(6), two equivalent Co(7), and one Ni(1) atom. In the third P site, P(3) is bonded in a 9-coordinate geometry to one Co(3), one Co(4), one Co(7), two equivalent Co(1), two equivalent Co(5), and two equivalent Ni(1) atoms. In the fourth P site, P(4) is bonded in a 9-coordinate geometry to one Co(3), one Co(4), one Co(6), two equivalent Co(2), two equivalent Co(5), and two equivalent Ni(1) atoms.
Co7NiP4 crystallizes in the monoclinic Pm space group. There are seven inequivalent Co sites. In the first Co site, Co(1) is bonded to one P(1), one P(2), and two equivalent P(3) atoms to form a mixture of distorted corner and edge-sharing CoP4 tetrahedra. The Co(1)-P(1) bond length is 2.18 Å. The Co(1)-P(2) bond length is 2.11 Å. Both Co(1)-P(3) bond lengths are 2.19 Å. In the second Co site, Co(2) is bonded to one P(1), one P(2), and two equivalent P(4) atoms to form a mixture of distorted corner and edge-sharing CoP4 tetrahedra. The Co(2)-P(1) bond length is 2.13 Å. The Co(2)-P(2) bond length is 2.17 Å. Both Co(2)-P(4) bond lengths are 2.19 Å. In the third Co site, Co(3) is bonded to one P(3), one P(4), and two equivalent P(1) atoms to form a mixture of distorted corner and edge-sharing CoP4 tetrahedra. The Co(3)-P(3) bond length is 2.19 Å. The Co(3)-P(4) bond length is 2.13 Å. Both Co(3)-P(1) bond lengths are 2.20 Å. In the fourth Co site, Co(4) is bonded to one P(3), one P(4), and two equivalent P(2) atoms to form a mixture of distorted corner and edge-sharing CoP4 tetrahedra. The Co(4)-P(3) bond length is 2.13 Å. The Co(4)-P(4) bond length is 2.18 Å. Both Co(4)-P(2) bond lengths are 2.20 Å. In the fifth Co site, Co(5) is bonded in a 5-coordinate geometry to one P(1), two equivalent P(3), and two equivalent P(4) atoms. The Co(5)-P(1) bond length is 2.23 Å. Both Co(5)-P(3) bond lengths are 2.36 Å. Both Co(5)-P(4) bond lengths are 2.48 Å. In the sixth Co site, Co(6) is bonded in a 5-coordinate geometry to one P(4), two equivalent P(1), and two equivalent P(2) atoms. The Co(6)-P(4) bond length is 2.24 Å. Both Co(6)-P(1) bond lengths are 2.49 Å. Both Co(6)-P(2) bond lengths are 2.38 Å. In the seventh Co site, Co(7) is bonded in a 5-coordinate geometry to one P(3), two equivalent P(1), and two equivalent P(2) atoms. The Co(7)-P(3) bond length is 2.23 Å. Both Co(7)-P(1) bond lengths are 2.35 Å. Both Co(7)-P(2) bond lengths are 2.52 Å. Ni(1) is bonded in a 3-coordinate geometry to one P(2), two equivalent P(3), and two equivalent P(4) atoms. The Ni(1)-P(2) bond length is 2.24 Å. Both Ni(1)-P(3) bond lengths are 2.56 Å. Both Ni(1)-P(4) bond lengths are 2.37 Å. There are four inequivalent P sites. In the first P site, P(1) is bonded in a 9-coordinate geometry to one Co(1), one Co(2), one Co(5), two equivalent Co(3), two equivalent Co(6), and two equivalent Co(7) atoms. In the second P site, P(2) is bonded in a 9-coordinate geometry to one Co(1), one Co(2), two equivalent Co(4), two equivalent Co(6), two equivalent Co(7), and one Ni(1) atom. In the third P site, P(3) is bonded in a 9-coordinate geometry to one Co(3), one Co(4), one Co(7), two equivalent Co(1), two equivalent Co(5), and two equivalent Ni(1) atoms. In the fourth P site, P(4) is bonded in a 9-coordinate geometry to one Co(3), one Co(4), one Co(6), two equivalent Co(2), two equivalent Co(5), and two equivalent Ni(1) atoms.