MnFe4 crystallizes in the orthorhombic Fmmm space group. Mn(1) is bonded in a 4-coordinate geometry to four equivalent Fe(1) atoms. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded in a 2-coordinate geometry to two equivalent Mn(1) and two equivalent Fe(2) atoms. In the second Fe site, Fe(2) is bonded in a distorted body-centered cubic geometry to two equivalent Fe(1) and six equivalent Fe(2) atoms.
MnFe4 crystallizes in the orthorhombic Fmmm space group. Mn(1) is bonded in a 4-coordinate geometry to four equivalent Fe(1) atoms. All Mn(1)-Fe(1) bond lengths are 2.44 Å. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded in a 2-coordinate geometry to two equivalent Mn(1) and two equivalent Fe(2) atoms. Both Fe(1)-Fe(2) bond lengths are 2.46 Å. In the second Fe site, Fe(2) is bonded in a distorted body-centered cubic geometry to two equivalent Fe(1) and six equivalent Fe(2) atoms. There are four shorter (2.44 Å) and two longer (2.46 Å) Fe(2)-Fe(2) bond lengths.