Mn2FeCoP2 crystallizes in the orthorhombic Pmc2_1 space group. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a 5-coordinate geometry to one P(1) and four equivalent P(2) atoms. In the second Mn site, Mn(2) is bonded in a 11-coordinate geometry to two equivalent Fe(1), four equivalent Co(1), one P(2), and four equivalent P(1) atoms. Fe(1) is bonded to two equivalent Mn(2), two equivalent P(1), and two equivalent P(2) atoms to form distorted corner-sharing FeMn2P4 tetrahedra. Co(1) is bonded in a 4-coordinate geometry to four equivalent Mn(2), two equivalent 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 9-coordinate geometry to one Mn(1), four equivalent Mn(2), two equivalent Fe(1), and two equivalent Co(1) atoms. In the second P site, P(2) is bonded in a 9-coordinate geometry to one Mn(2), four equivalent Mn(1), two equivalent Fe(1), and two equivalent Co(1) atoms.
Mn2FeCoP2 crystallizes in the orthorhombic Pmc2_1 space group. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a 5-coordinate geometry to one P(1) and four equivalent P(2) atoms. The Mn(1)-P(1) bond length is 2.40 Å. There are two shorter (2.47 Å) and two longer (2.51 Å) Mn(1)-P(2) bond lengths. In the second Mn site, Mn(2) is bonded in a 11-coordinate geometry to two equivalent Fe(1), four equivalent Co(1), one P(2), and four equivalent P(1) atoms. There is one shorter (2.70 Å) and one longer (2.71 Å) Mn(2)-Fe(1) bond length. There are two shorter (2.66 Å) and two longer (2.68 Å) Mn(2)-Co(1) bond lengths. The Mn(2)-P(2) bond length is 2.42 Å. There are two shorter (2.48 Å) and two longer (2.52 Å) Mn(2)-P(1) bond lengths. Fe(1) is bonded to two equivalent Mn(2), two equivalent P(1), and two equivalent P(2) atoms to form distorted corner-sharing FeMn2P4 tetrahedra. Both Fe(1)-P(1) bond lengths are 2.20 Å. There is one shorter (2.20 Å) and one longer (2.23 Å) Fe(1)-P(2) bond length. Co(1) is bonded in a 4-coordinate geometry to four equivalent Mn(2), two equivalent P(1), and two equivalent P(2) atoms. There is one shorter (2.19 Å) and one longer (2.24 Å) Co(1)-P(1) bond length. Both Co(1)-P(2) bond lengths are 2.23 Å. There are two inequivalent P sites. In the first P site, P(1) is bonded in a 9-coordinate geometry to one Mn(1), four equivalent Mn(2), two equivalent Fe(1), and two equivalent Co(1) atoms. In the second P site, P(2) is bonded in a 9-coordinate geometry to one Mn(2), four equivalent Mn(1), two equivalent Fe(1), and two equivalent Co(1) atoms.