The compound described by FeCrO4 crystallizes in the orthorhombic Cmcm space group. Cr(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form CrO4 tetrahedra that share corners with six equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-54°. Fe(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form FeO6 octahedra that share corners with six equivalent Cr(1)O4 tetrahedra and edges with two equivalent Fe(1)O6 octahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Cr(1) and two equivalent Fe(1) atoms. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Cr(1) and one Fe(1) atom. is represented by the CIF card [CIF]
data_CrFeO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.044
_cell_length_b   5.044
_cell_length_c   6.333
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   112.722
_symmetry_Int_Tables_number   1
_cell_volume   148.626
_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
  Cr  Cr0  1  0.644  0.356  0.250  1.0
  Cr  Cr1  1  0.356  0.644  0.750  1.0
  Fe  Fe2  1  0.000  0.000  0.000  1.0
  Fe  Fe3  1  0.000  0.000  0.500  1.0
  O  O4  1  0.264  0.213  0.250  1.0
  O  O5  1  0.213  0.264  0.750  1.0
  O  O6  1  0.767  0.233  0.041  1.0
  O  O7  1  0.767  0.233  0.459  1.0
  O  O8  1  0.233  0.767  0.541  1.0
  O  O9  1  0.233  0.767  0.959  1.0
  O  O10  1  0.787  0.736  0.250  1.0
  O  O11  1  0.736  0.787  0.750  1.0
[/CIF]
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The compound described by FeCrO4 crystallizes in the orthorhombic Cmcm space group. Cr(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form CrO4 tetrahedra that share corners with six equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-54°. Fe(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form FeO6 octahedra that share corners with six equivalent Cr(1)O4 tetrahedra and edges with two equivalent Fe(1)O6 octahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Cr(1) and two equivalent Fe(1) atoms. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Cr(1) and one Fe(1) atom. is represented by the CIF card [CIF]
data_CrFeO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.044
_cell_length_b   5.044
_cell_length_c   6.333
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   112.722
_symmetry_Int_Tables_number   1
_cell_volume   148.626
_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
  Cr  Cr0  1  0.644  0.356  0.250  1.0
  Cr  Cr1  1  0.356  0.644  0.750  1.0
  Fe  Fe2  1  0.000  0.000  0.000  1.0
  Fe  Fe3  1  0.000  0.000  0.500  1.0
  O  O4  1  0.264  0.213  0.250  1.0
  O  O5  1  0.213  0.264  0.750  1.0
  O  O6  1  0.767  0.233  0.041  1.0
  O  O7  1  0.767  0.233  0.459  1.0
  O  O8  1  0.233  0.767  0.541  1.0
  O  O9  1  0.233  0.767  0.959  1.0
  O  O10  1  0.787  0.736  0.250  1.0
  O  O11  1  0.736  0.787  0.750  1.0
[/CIF]
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