The structure described by FeMn2O4 is Spinel-like structured and crystallizes in the orthorhombic Imma space group. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form MnO4 tetrahedra that share corners with six equivalent Mn(2)O6 octahedra and corners with six equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 57-61°. In the second Mn site, Mn(2) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form MnO6 octahedra that share corners with six equivalent Mn(1)O4 tetrahedra, edges with two equivalent Mn(2)O6 octahedra, and edges with four equivalent Fe(1)O6 octahedra. Fe(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form FeO6 octahedra that share corners with six equivalent Mn(1)O4 tetrahedra, edges with two equivalent Fe(1)O6 octahedra, and edges with four equivalent Mn(2)O6 octahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded to one Mn(1), two equivalent Mn(2), and one Fe(1) atom to form distorted OMn3Fe trigonal pyramids that share corners with six equivalent O(2)Mn2Fe2 trigonal pyramids, corners with six equivalent O(1)Mn3Fe trigonal pyramids,  an edgeedge with one O(1)Mn3Fe trigonal pyramid, and edges with two equivalent O(2)Mn2Fe2 trigonal pyramids. In the second O site, O(2) is bonded to one Mn(1), one Mn(2), and two equivalent Fe(1) atoms to form distorted OMn2Fe2 trigonal pyramids that share corners with six equivalent O(2)Mn2Fe2 trigonal pyramids, corners with six equivalent O(1)Mn3Fe trigonal pyramids,  an edgeedge with one O(2)Mn2Fe2 trigonal pyramid, and edges with two equivalent O(1)Mn3Fe trigonal pyramids. is represented by the CIF file [CIF]
data_Mn2FeO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.087
_cell_length_b   6.087
_cell_length_c   6.167
_cell_angle_alpha   59.568
_cell_angle_beta   59.568
_cell_angle_gamma   61.803
_symmetry_Int_Tables_number   1
_cell_volume   162.572
_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  0.005  0.005  0.995  1.0
  Mn  Mn1  1  0.245  0.245  0.255  1.0
  Mn  Mn2  1  0.125  0.625  0.625  1.0
  Mn  Mn3  1  0.625  0.125  0.625  1.0
  Fe  Fe4  1  0.625  0.625  0.125  1.0
  Fe  Fe5  1  0.625  0.625  0.625  1.0
  O  O6  1  0.388  0.388  0.380  1.0
  O  O7  1  0.388  0.388  0.844  1.0
  O  O8  1  0.384  0.833  0.392  1.0
  O  O9  1  0.417  0.866  0.858  1.0
  O  O10  1  0.833  0.384  0.392  1.0
  O  O11  1  0.866  0.417  0.858  1.0
  O  O12  1  0.862  0.862  0.406  1.0
  O  O13  1  0.862  0.862  0.870  1.0
[/CIF]
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The structure described by FeMn2O4 is Spinel-like structured and crystallizes in the orthorhombic Imma space group. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form MnO4 tetrahedra that share corners with six equivalent Mn(2)O6 octahedra and corners with six equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 57-61°. In the second Mn site, Mn(2) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form MnO6 octahedra that share corners with six equivalent Mn(1)O4 tetrahedra, edges with two equivalent Mn(2)O6 octahedra, and edges with four equivalent Fe(1)O6 octahedra. Fe(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form FeO6 octahedra that share corners with six equivalent Mn(1)O4 tetrahedra, edges with two equivalent Fe(1)O6 octahedra, and edges with four equivalent Mn(2)O6 octahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded to one Mn(1), two equivalent Mn(2), and one Fe(1) atom to form distorted OMn3Fe trigonal pyramids that share corners with six equivalent O(2)Mn2Fe2 trigonal pyramids, corners with six equivalent O(1)Mn3Fe trigonal pyramids,  an edgeedge with one O(1)Mn3Fe trigonal pyramid, and edges with two equivalent O(2)Mn2Fe2 trigonal pyramids. In the second O site, O(2) is bonded to one Mn(1), one Mn(2), and two equivalent Fe(1) atoms to form distorted OMn2Fe2 trigonal pyramids that share corners with six equivalent O(2)Mn2Fe2 trigonal pyramids, corners with six equivalent O(1)Mn3Fe trigonal pyramids,  an edgeedge with one O(2)Mn2Fe2 trigonal pyramid, and edges with two equivalent O(1)Mn3Fe trigonal pyramids. is represented by the CIF file [CIF]
data_Mn2FeO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.087
_cell_length_b   6.087
_cell_length_c   6.167
_cell_angle_alpha   59.568
_cell_angle_beta   59.568
_cell_angle_gamma   61.803
_symmetry_Int_Tables_number   1
_cell_volume   162.572
_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  0.005  0.005  0.995  1.0
  Mn  Mn1  1  0.245  0.245  0.255  1.0
  Mn  Mn2  1  0.125  0.625  0.625  1.0
  Mn  Mn3  1  0.625  0.125  0.625  1.0
  Fe  Fe4  1  0.625  0.625  0.125  1.0
  Fe  Fe5  1  0.625  0.625  0.625  1.0
  O  O6  1  0.388  0.388  0.380  1.0
  O  O7  1  0.388  0.388  0.844  1.0
  O  O8  1  0.384  0.833  0.392  1.0
  O  O9  1  0.417  0.866  0.858  1.0
  O  O10  1  0.833  0.384  0.392  1.0
  O  O11  1  0.866  0.417  0.858  1.0
  O  O12  1  0.862  0.862  0.406  1.0
  O  O13  1  0.862  0.862  0.870  1.0
[/CIF]
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