The crystal structure described by FeMn2O4 is Spinel structured and crystallizes in the orthorhombic Fdd2 space group. Mn(1) is bonded to three equivalent O(1) and three equivalent O(2) atoms to form MnO6 octahedra that share corners with six equivalent Fe(1)O4 tetrahedra and edges with six equivalent Mn(1)O6 octahedra. Fe(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form FeO4 tetrahedra that share corners with twelve equivalent Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-61°. There are two inequivalent O sites. In the first O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to three equivalent Mn(1) and one Fe(1) atom. In the second O site, O(1) is bonded in a distorted rectangular see-saw-like geometry to three equivalent Mn(1) and one Fe(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Mn2FeO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.817
_cell_length_b   5.817
_cell_length_c   6.306
_cell_angle_alpha   62.753
_cell_angle_beta   62.755
_cell_angle_gamma   90.423
_symmetry_Int_Tables_number   1
_cell_volume   162.141
_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  0.375  0.625  0.750  1.0
  Mn  Mn1  1  0.375  0.124  0.250  1.0
  Mn  Mn2  1  0.375  0.625  0.250  1.0
  Mn  Mn3  1  0.874  0.625  0.750  1.0
  Fe  Fe4  1  0.749  0.249  0.500  1.0
  Fe  Fe5  1  0.999  0.999  1.000  1.0
  O  O6  1  0.618  0.843  0.767  1.0
  O  O7  1  0.610  0.384  0.233  1.0
  O  O8  1  0.142  0.867  0.265  1.0
  O  O9  1  0.157  0.382  0.235  1.0
  O  O10  1  0.134  0.860  0.733  1.0
  O  O11  1  0.617  0.392  0.765  1.0
  O  O12  1  0.132  0.407  0.735  1.0
  O  O13  1  0.593  0.868  0.267  1.0
[/CIF]
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The crystal structure described by FeMn2O4 is Spinel structured and crystallizes in the orthorhombic Fdd2 space group. Mn(1) is bonded to three equivalent O(1) and three equivalent O(2) atoms to form MnO6 octahedra that share corners with six equivalent Fe(1)O4 tetrahedra and edges with six equivalent Mn(1)O6 octahedra. Fe(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form FeO4 tetrahedra that share corners with twelve equivalent Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-61°. There are two inequivalent O sites. In the first O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to three equivalent Mn(1) and one Fe(1) atom. In the second O site, O(1) is bonded in a distorted rectangular see-saw-like geometry to three equivalent Mn(1) and one Fe(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Mn2FeO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.817
_cell_length_b   5.817
_cell_length_c   6.306
_cell_angle_alpha   62.753
_cell_angle_beta   62.755
_cell_angle_gamma   90.423
_symmetry_Int_Tables_number   1
_cell_volume   162.141
_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  0.375  0.625  0.750  1.0
  Mn  Mn1  1  0.375  0.124  0.250  1.0
  Mn  Mn2  1  0.375  0.625  0.250  1.0
  Mn  Mn3  1  0.874  0.625  0.750  1.0
  Fe  Fe4  1  0.749  0.249  0.500  1.0
  Fe  Fe5  1  0.999  0.999  1.000  1.0
  O  O6  1  0.618  0.843  0.767  1.0
  O  O7  1  0.610  0.384  0.233  1.0
  O  O8  1  0.142  0.867  0.265  1.0
  O  O9  1  0.157  0.382  0.235  1.0
  O  O10  1  0.134  0.860  0.733  1.0
  O  O11  1  0.617  0.392  0.765  1.0
  O  O12  1  0.132  0.407  0.735  1.0
  O  O13  1  0.593  0.868  0.267  1.0
[/CIF]
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