The compound described by MnFe2O4 is Spinel structured and crystallizes in the triclinic P-1 space group. Mn(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form MnO4 tetrahedra that share corners with three equivalent Fe(1)O6 octahedra, corners with three equivalent Fe(2)O6 octahedra, corners with three equivalent Fe(3)O6 octahedra, and corners with three equivalent Fe(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-63°. There are four inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms to form FeO6 octahedra that share corners with six equivalent Mn(1)O4 tetrahedra, edges with two equivalent Fe(2)O6 octahedra, edges with two equivalent Fe(3)O6 octahedra, and edges with two equivalent Fe(4)O6 octahedra. In the second Fe site, Fe(2) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms to form FeO6 octahedra that share corners with six equivalent Mn(1)O4 tetrahedra, edges with two equivalent Fe(1)O6 octahedra, edges with two equivalent Fe(3)O6 octahedra, and edges with two equivalent Fe(4)O6 octahedra. In the third Fe site, Fe(3) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form FeO6 octahedra that share corners with six equivalent Mn(1)O4 tetrahedra, edges with two equivalent Fe(1)O6 octahedra, edges with two equivalent Fe(2)O6 octahedra, and edges with two equivalent Fe(4)O6 octahedra. In the fourth Fe site, Fe(4) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms to form FeO6 octahedra that share corners with six equivalent Mn(1)O4 tetrahedra, edges with two equivalent Fe(1)O6 octahedra, edges with two equivalent Fe(2)O6 octahedra, and edges with two equivalent Fe(3)O6 octahedra. There are four inequivalent O sites. In the first O site, O(1) is bonded to one Mn(1), one Fe(2), one Fe(3), and one Fe(4) atom to form a mixture of distorted edge and corner-sharing OMnFe3 trigonal pyramids. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to one Mn(1), one Fe(1), one Fe(3), and one Fe(4) atom. In the third O site, O(3) is bonded in a rectangular see-saw-like geometry to one Mn(1), one Fe(1), one Fe(2), and one Fe(3) atom. In the fourth O site, O(4) is bonded to one Mn(1), one Fe(1), one Fe(2), and one Fe(4) atom to form a mixture of distorted edge and corner-sharing OMnFe3 trigonal pyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_Mn(FeO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.054
_cell_length_b   6.070
_cell_length_c   6.090
_cell_angle_alpha   59.339
_cell_angle_beta   59.573
_cell_angle_gamma   60.315
_symmetry_Int_Tables_number   1
_cell_volume   157.284
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Mn  Mn0  1  0.123  0.128  0.126  1.0
  Mn  Mn1  1  0.877  0.872  0.874  1.0
  Fe  Fe2  1  0.500  0.500  0.500  1.0
  Fe  Fe3  1  0.500  0.500  0.000  1.0
  Fe  Fe4  1  1.000  0.500  0.500  1.0
  Fe  Fe5  1  0.500  1.000  0.500  1.0
  O  O6  1  0.730  0.742  0.735  1.0
  O  O7  1  0.259  0.277  0.713  1.0
  O  O8  1  0.263  0.714  0.245  1.0
  O  O9  1  0.708  0.267  0.260  1.0
  O  O10  1  0.737  0.286  0.755  1.0
  O  O11  1  0.292  0.733  0.740  1.0
  O  O12  1  0.270  0.258  0.265  1.0
  O  O13  1  0.741  0.723  0.287  1.0
[/CIF]
.
The compound described by MnFe2O4 is Spinel structured and crystallizes in the triclinic P-1 space group. Mn(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form MnO4 tetrahedra that share corners with three equivalent Fe(1)O6 octahedra, corners with three equivalent Fe(2)O6 octahedra, corners with three equivalent Fe(3)O6 octahedra, and corners with three equivalent Fe(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-63°. There are four inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms to form FeO6 octahedra that share corners with six equivalent Mn(1)O4 tetrahedra, edges with two equivalent Fe(2)O6 octahedra, edges with two equivalent Fe(3)O6 octahedra, and edges with two equivalent Fe(4)O6 octahedra. In the second Fe site, Fe(2) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms to form FeO6 octahedra that share corners with six equivalent Mn(1)O4 tetrahedra, edges with two equivalent Fe(1)O6 octahedra, edges with two equivalent Fe(3)O6 octahedra, and edges with two equivalent Fe(4)O6 octahedra. In the third Fe site, Fe(3) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form FeO6 octahedra that share corners with six equivalent Mn(1)O4 tetrahedra, edges with two equivalent Fe(1)O6 octahedra, edges with two equivalent Fe(2)O6 octahedra, and edges with two equivalent Fe(4)O6 octahedra. In the fourth Fe site, Fe(4) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms to form FeO6 octahedra that share corners with six equivalent Mn(1)O4 tetrahedra, edges with two equivalent Fe(1)O6 octahedra, edges with two equivalent Fe(2)O6 octahedra, and edges with two equivalent Fe(3)O6 octahedra. There are four inequivalent O sites. In the first O site, O(1) is bonded to one Mn(1), one Fe(2), one Fe(3), and one Fe(4) atom to form a mixture of distorted edge and corner-sharing OMnFe3 trigonal pyramids. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to one Mn(1), one Fe(1), one Fe(3), and one Fe(4) atom. In the third O site, O(3) is bonded in a rectangular see-saw-like geometry to one Mn(1), one Fe(1), one Fe(2), and one Fe(3) atom. In the fourth O site, O(4) is bonded to one Mn(1), one Fe(1), one Fe(2), and one Fe(4) atom to form a mixture of distorted edge and corner-sharing OMnFe3 trigonal pyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_Mn(FeO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.054
_cell_length_b   6.070
_cell_length_c   6.090
_cell_angle_alpha   59.339
_cell_angle_beta   59.573
_cell_angle_gamma   60.315
_symmetry_Int_Tables_number   1
_cell_volume   157.284
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Mn  Mn0  1  0.123  0.128  0.126  1.0
  Mn  Mn1  1  0.877  0.872  0.874  1.0
  Fe  Fe2  1  0.500  0.500  0.500  1.0
  Fe  Fe3  1  0.500  0.500  0.000  1.0
  Fe  Fe4  1  1.000  0.500  0.500  1.0
  Fe  Fe5  1  0.500  1.000  0.500  1.0
  O  O6  1  0.730  0.742  0.735  1.0
  O  O7  1  0.259  0.277  0.713  1.0
  O  O8  1  0.263  0.714  0.245  1.0
  O  O9  1  0.708  0.267  0.260  1.0
  O  O10  1  0.737  0.286  0.755  1.0
  O  O11  1  0.292  0.733  0.740  1.0
  O  O12  1  0.270  0.258  0.265  1.0
  O  O13  1  0.741  0.723  0.287  1.0
[/CIF]
.