LaCo5P3 crystallizes in the orthorhombic Cmcm space group. La(1) is bonded in a 15-coordinate geometry to four equivalent Co(1), four equivalent Co(2), three equivalent P(1), and four equivalent P(2) atoms. There are three inequivalent Co sites. In the first Co site, Co(1) is bonded in a 4-coordinate geometry to two equivalent La(1), two equivalent P(1), and two equivalent P(2) atoms. In the second Co site, Co(2) is bonded in a 4-coordinate geometry to two equivalent La(1), one P(1), and three equivalent P(2) atoms. In the third Co site, Co(3) is bonded in a 4-coordinate geometry to four equivalent P(2) atoms. There are two inequivalent P sites. In the first P site, P(1) is bonded in a 6-coordinate geometry to three equivalent La(1), two equivalent Co(2), and four equivalent Co(1) atoms. In the second P site, P(2) is bonded in a 9-coordinate geometry to two equivalent La(1), two equivalent Co(1), two equivalent Co(3), and three equivalent Co(2) atoms.
LaCo5P3 crystallizes in the orthorhombic Cmcm space group. La(1) is bonded in a 15-coordinate geometry to four equivalent Co(1), four equivalent Co(2), three equivalent P(1), and four equivalent P(2) atoms. All La(1)-Co(1) bond lengths are 3.26 Å. All La(1)-Co(2) bond lengths are 3.18 Å. There are two shorter (3.10 Å) and one longer (3.23 Å) La(1)-P(1) bond length. All La(1)-P(2) bond lengths are 3.08 Å. There are three inequivalent Co sites. In the first Co site, Co(1) is bonded in a 4-coordinate geometry to two equivalent La(1), two equivalent P(1), and two equivalent P(2) atoms. Both Co(1)-P(1) bond lengths are 2.28 Å. There is one shorter (2.22 Å) and one longer (2.32 Å) Co(1)-P(2) bond length. In the second Co site, Co(2) is bonded in a 4-coordinate geometry to two equivalent La(1), one P(1), and three equivalent P(2) atoms. The Co(2)-P(1) bond length is 2.26 Å. There is one shorter (2.16 Å) and two longer (2.33 Å) Co(2)-P(2) bond lengths. In the third Co site, Co(3) is bonded in a 4-coordinate geometry to four equivalent P(2) atoms. All Co(3)-P(2) bond lengths are 2.30 Å. There are two inequivalent P sites. In the first P site, P(1) is bonded in a 6-coordinate geometry to three equivalent La(1), two equivalent Co(2), and four equivalent Co(1) atoms. In the second P site, P(2) is bonded in a 9-coordinate geometry to two equivalent La(1), two equivalent Co(1), two equivalent Co(3), and three equivalent Co(2) atoms.