Mn3(FeN2)2 crystallizes in the monoclinic C2/c space group. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to two equivalent N(1) and two equivalent N(2) atoms to form a mixture of distorted edge and corner-sharing MnN4 tetrahedra. In the second Mn site, Mn(2) is bonded in a 4-coordinate geometry to two equivalent N(1) and two equivalent N(2) atoms. Fe(1) is bonded in a 3-coordinate geometry to one N(1) and two equivalent N(2) atoms. There are two inequivalent N sites. In the first N site, N(1) is bonded in a distorted see-saw-like geometry to one Mn(2), two equivalent Mn(1), and one Fe(1) atom. In the second N site, N(2) is bonded in a 5-coordinate geometry to one Mn(2), two equivalent Mn(1), and two equivalent Fe(1) atoms.
Mn3(FeN2)2 crystallizes in the monoclinic C2/c space group. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to two equivalent N(1) and two equivalent N(2) atoms to form a mixture of distorted edge and corner-sharing MnN4 tetrahedra. There is one shorter (1.85 Å) and one longer (1.88 Å) Mn(1)-N(1) bond length. Both Mn(1)-N(2) bond lengths are 1.94 Å. In the second Mn site, Mn(2) is bonded in a 4-coordinate geometry to two equivalent N(1) and two equivalent N(2) atoms. Both Mn(2)-N(1) bond lengths are 1.90 Å. Both Mn(2)-N(2) bond lengths are 2.03 Å. Fe(1) is bonded in a 3-coordinate geometry to one N(1) and two equivalent N(2) atoms. The Fe(1)-N(1) bond length is 1.84 Å. There is one shorter (1.85 Å) and one longer (1.88 Å) Fe(1)-N(2) bond length. There are two inequivalent N sites. In the first N site, N(1) is bonded in a distorted see-saw-like geometry to one Mn(2), two equivalent Mn(1), and one Fe(1) atom. In the second N site, N(2) is bonded in a 5-coordinate geometry to one Mn(2), two equivalent Mn(1), and two equivalent Fe(1) atoms.