Co3Ni9P4 crystallizes in the triclinic P1 space group. There are three inequivalent Co sites. In the first Co site, Co(1) is bonded in a 2-coordinate geometry to one P(2) and one P(4) atom. In the second Co site, Co(2) is bonded in a 2-coordinate geometry to one P(2) and one P(3) atom. In the third Co site, Co(3) is bonded in a 2-coordinate geometry to one P(1) and one P(4) atom. There are nine inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 3-coordinate geometry to one P(1), one P(2), and one P(3) atom. In the second Ni site, Ni(2) is bonded in a 3-coordinate geometry to one P(1), one P(2), and one P(4) atom. In the third Ni site, Ni(3) is bonded in a 3-coordinate geometry to one P(2), one P(3), and one P(4) atom. In the fourth Ni site, Ni(4) is bonded in a 3-coordinate geometry to one P(1), one P(3), and one P(4) atom. In the fifth Ni site, Ni(5) is bonded in a 4-coordinate geometry to one P(3), one P(4), and two equivalent P(1) atoms. In the sixth Ni site, Ni(6) is bonded in a 4-coordinate geometry to one P(3), one P(4), and two equivalent P(2) atoms. In the seventh Ni site, Ni(7) is bonded in a 4-coordinate geometry to one P(1), one P(2), and two equivalent P(3) atoms. In the eighth Ni site, Ni(8) is bonded in a 4-coordinate geometry to one P(1), one P(2), and two equivalent P(4) atoms. In the ninth Ni site, Ni(9) is bonded in a 2-coordinate geometry to one P(1) and one P(3) atom. There are four inequivalent P sites. In the first P site, P(1) is bonded in a 9-coordinate geometry to one Co(3), one Ni(1), one Ni(2), one Ni(4), one Ni(7), one Ni(8), one Ni(9), and two equivalent Ni(5) atoms. In the second P site, P(2) is bonded in a 9-coordinate geometry to one Co(1), one Co(2), one Ni(1), one Ni(2), one Ni(3), one Ni(7), one Ni(8), and two equivalent Ni(6) atoms. In the third P site, P(3) is bonded in a 9-coordinate geometry to one Co(2), one Ni(1), one Ni(3), one Ni(4), one Ni(5), one Ni(6), one Ni(9), and two equivalent Ni(7) atoms. In the fourth P site, P(4) is bonded in a 9-coordinate geometry to one Co(1), one Co(3), one Ni(2), one Ni(3), one Ni(4), one Ni(5), one Ni(6), and two equivalent Ni(8) atoms.
Co3Ni9P4 crystallizes in the triclinic P1 space group. There are three inequivalent Co sites. In the first Co site, Co(1) is bonded in a 2-coordinate geometry to one P(2) and one P(4) atom. The Co(1)-P(2) bond length is 2.19 Å. The Co(1)-P(4) bond length is 2.25 Å. In the second Co site, Co(2) is bonded in a 2-coordinate geometry to one P(2) and one P(3) atom. The Co(2)-P(2) bond length is 2.25 Å. The Co(2)-P(3) bond length is 2.19 Å. In the third Co site, Co(3) is bonded in a 2-coordinate geometry to one P(1) and one P(4) atom. The Co(3)-P(1) bond length is 2.26 Å. The Co(3)-P(4) bond length is 2.18 Å. There are nine inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 3-coordinate geometry to one P(1), one P(2), and one P(3) atom. The Ni(1)-P(1) bond length is 2.21 Å. The Ni(1)-P(2) bond length is 2.32 Å. The Ni(1)-P(3) bond length is 2.26 Å. In the second Ni site, Ni(2) is bonded in a 3-coordinate geometry to one P(1), one P(2), and one P(4) atom. The Ni(2)-P(1) bond length is 2.33 Å. The Ni(2)-P(2) bond length is 2.21 Å. The Ni(2)-P(4) bond length is 2.27 Å. In the third Ni site, Ni(3) is bonded in a 3-coordinate geometry to one P(2), one P(3), and one P(4) atom. The Ni(3)-P(2) bond length is 2.26 Å. The Ni(3)-P(3) bond length is 2.20 Å. The Ni(3)-P(4) bond length is 2.32 Å. In the fourth Ni site, Ni(4) is bonded in a 3-coordinate geometry to one P(1), one P(3), and one P(4) atom. The Ni(4)-P(1) bond length is 2.26 Å. The Ni(4)-P(3) bond length is 2.31 Å. The Ni(4)-P(4) bond length is 2.21 Å. In the fifth Ni site, Ni(5) is bonded in a 4-coordinate geometry to one P(3), one P(4), and two equivalent P(1) atoms. The Ni(5)-P(3) bond length is 2.33 Å. The Ni(5)-P(4) bond length is 2.31 Å. There is one shorter (2.27 Å) and one longer (2.33 Å) Ni(5)-P(1) bond length. In the sixth Ni site, Ni(6) is bonded in a 4-coordinate geometry to one P(3), one P(4), and two equivalent P(2) atoms. The Ni(6)-P(3) bond length is 2.32 Å. The Ni(6)-P(4) bond length is 2.34 Å. There is one shorter (2.28 Å) and one longer (2.33 Å) Ni(6)-P(2) bond length. In the seventh Ni site, Ni(7) is bonded in a 4-coordinate geometry to one P(1), one P(2), and two equivalent P(3) atoms. The Ni(7)-P(1) bond length is 2.31 Å. The Ni(7)-P(2) bond length is 2.34 Å. There is one shorter (2.29 Å) and one longer (2.31 Å) Ni(7)-P(3) bond length. In the eighth Ni site, Ni(8) is bonded in a 4-coordinate geometry to one P(1), one P(2), and two equivalent P(4) atoms. The Ni(8)-P(1) bond length is 2.33 Å. The Ni(8)-P(2) bond length is 2.31 Å. There is one shorter (2.28 Å) and one longer (2.32 Å) Ni(8)-P(4) bond length. In the ninth Ni site, Ni(9) is bonded in a 2-coordinate geometry to one P(1) and one P(3) atom. The Ni(9)-P(1) bond length is 2.21 Å. The Ni(9)-P(3) bond length is 2.28 Å. There are four inequivalent P sites. In the first P site, P(1) is bonded in a 9-coordinate geometry to one Co(3), one Ni(1), one Ni(2), one Ni(4), one Ni(7), one Ni(8), one Ni(9), and two equivalent Ni(5) atoms. In the second P site, P(2) is bonded in a 9-coordinate geometry to one Co(1), one Co(2), one Ni(1), one Ni(2), one Ni(3), one Ni(7), one Ni(8), and two equivalent Ni(6) atoms. In the third P site, P(3) is bonded in a 9-coordinate geometry to one Co(2), one Ni(1), one Ni(3), one Ni(4), one Ni(5), one Ni(6), one Ni(9), and two equivalent Ni(7) atoms. In the fourth P site, P(4) is bonded in a 9-coordinate geometry to one Co(1), one Co(3), one Ni(2), one Ni(3), one Ni(4), one Ni(5), one Ni(6), and two equivalent Ni(8) atoms.