The material structure described by Cr3Mn2FeO8 is Spinel-derived structured and crystallizes in the trigonal R-3m space group. Cr(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form CrO6 octahedra that share corners with six equivalent Mn(1)O4 tetrahedra, edges with two equivalent Fe(1)O6 octahedra, and edges with four equivalent Cr(1)O6 octahedra. Mn(1) is bonded to one O(1) and three equivalent O(2) atoms to form MnO4 tetrahedra that share corners with three equivalent Fe(1)O6 octahedra and corners with nine equivalent Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 59-60°. Fe(1) is bonded to six equivalent O(2) atoms to form FeO6 octahedra that share corners with six equivalent Mn(1)O4 tetrahedra and edges with six equivalent Cr(1)O6 octahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded to three equivalent Cr(1) and one Mn(1) atom to form distorted OMnCr3 tetrahedra that share corners with three equivalent O(1)MnCr3 tetrahedra, corners with nine equivalent O(2)MnCr2Fe trigonal pyramids, and edges with three equivalent O(2)MnCr2Fe trigonal pyramids. In the second O site, O(2) is bonded to two equivalent Cr(1), one Mn(1), and one Fe(1) atom to form distorted OMnCr2Fe trigonal pyramids that share corners with three equivalent O(1)MnCr3 tetrahedra, corners with nine equivalent O(2)MnCr2Fe trigonal pyramids,  an edgeedge with one O(1)MnCr3 tetrahedra, and edges with two equivalent O(2)MnCr2Fe trigonal pyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_Mn2Cr3FeO8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.088
_cell_length_b   6.088
_cell_length_c   6.088
_cell_angle_alpha   60.131
_cell_angle_beta   119.869
_cell_angle_gamma   119.869
_symmetry_Int_Tables_number   1
_cell_volume   160.010
_cell_formula_units_Z   1
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  0.750  0.250  0.250  1.0
  Mn  Mn1  1  1.000  0.000  0.000  1.0
  Cr  Cr2  1  0.375  0.125  0.625  1.0
  Cr  Cr3  1  0.875  0.625  0.625  1.0
  Cr  Cr4  1  0.375  0.625  0.125  1.0
  Fe  Fe5  1  0.375  0.625  0.625  1.0
  O  O6  1  0.139  0.861  0.861  1.0
  O  O7  1  0.611  0.389  0.389  1.0
  O  O8  1  0.137  0.415  0.863  1.0
  O  O9  1  0.585  0.863  0.863  1.0
  O  O10  1  0.137  0.863  0.415  1.0
  O  O11  1  0.613  0.835  0.387  1.0
  O  O12  1  0.165  0.387  0.387  1.0
  O  O13  1  0.613  0.387  0.835  1.0
[/CIF]
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The material structure described by Cr3Mn2FeO8 is Spinel-derived structured and crystallizes in the trigonal R-3m space group. Cr(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form CrO6 octahedra that share corners with six equivalent Mn(1)O4 tetrahedra, edges with two equivalent Fe(1)O6 octahedra, and edges with four equivalent Cr(1)O6 octahedra. Mn(1) is bonded to one O(1) and three equivalent O(2) atoms to form MnO4 tetrahedra that share corners with three equivalent Fe(1)O6 octahedra and corners with nine equivalent Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 59-60°. Fe(1) is bonded to six equivalent O(2) atoms to form FeO6 octahedra that share corners with six equivalent Mn(1)O4 tetrahedra and edges with six equivalent Cr(1)O6 octahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded to three equivalent Cr(1) and one Mn(1) atom to form distorted OMnCr3 tetrahedra that share corners with three equivalent O(1)MnCr3 tetrahedra, corners with nine equivalent O(2)MnCr2Fe trigonal pyramids, and edges with three equivalent O(2)MnCr2Fe trigonal pyramids. In the second O site, O(2) is bonded to two equivalent Cr(1), one Mn(1), and one Fe(1) atom to form distorted OMnCr2Fe trigonal pyramids that share corners with three equivalent O(1)MnCr3 tetrahedra, corners with nine equivalent O(2)MnCr2Fe trigonal pyramids,  an edgeedge with one O(1)MnCr3 tetrahedra, and edges with two equivalent O(2)MnCr2Fe trigonal pyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_Mn2Cr3FeO8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.088
_cell_length_b   6.088
_cell_length_c   6.088
_cell_angle_alpha   60.131
_cell_angle_beta   119.869
_cell_angle_gamma   119.869
_symmetry_Int_Tables_number   1
_cell_volume   160.010
_cell_formula_units_Z   1
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  0.750  0.250  0.250  1.0
  Mn  Mn1  1  1.000  0.000  0.000  1.0
  Cr  Cr2  1  0.375  0.125  0.625  1.0
  Cr  Cr3  1  0.875  0.625  0.625  1.0
  Cr  Cr4  1  0.375  0.625  0.125  1.0
  Fe  Fe5  1  0.375  0.625  0.625  1.0
  O  O6  1  0.139  0.861  0.861  1.0
  O  O7  1  0.611  0.389  0.389  1.0
  O  O8  1  0.137  0.415  0.863  1.0
  O  O9  1  0.585  0.863  0.863  1.0
  O  O10  1  0.137  0.863  0.415  1.0
  O  O11  1  0.613  0.835  0.387  1.0
  O  O12  1  0.165  0.387  0.387  1.0
  O  O13  1  0.613  0.387  0.835  1.0
[/CIF]
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