The crystal structure described by MgCr2(FeO4)2 crystallizes in the monoclinic Pm space group. Mg(1) is bonded in a 4-coordinate geometry to one O(2), one O(6), and two equivalent O(4) atoms. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded in a tetrahedral geometry to one O(1), one O(5), and two equivalent O(3) atoms. In the second Cr site, Cr(2) is bonded in a tetrahedral geometry to one O(2), one O(6), and two equivalent O(4) atoms. Fe(1) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(3), one O(5), and one O(6) atom. There are six inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Cr(1) and two equivalent Fe(1) atoms. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), one Cr(2), and two equivalent Fe(1) atoms. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Cr(1) and one Fe(1) atom. In the fourth O site, O(4) is bonded in an L-shaped geometry to one Mg(1) and one Cr(2) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Cr(1) and two equivalent Fe(1) atoms. In the sixth O site, O(6) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), one Cr(2), and two equivalent Fe(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_MgCr2(FeO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.677
_cell_length_b   5.654
_cell_length_c   6.357
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   59.158
_symmetry_Int_Tables_number   1
_cell_volume   175.163
_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
  Mg  Mg0  1  0.843  0.832  0.750  1.0
  Cr  Cr1  1  0.392  0.393  0.250  1.0
  Cr  Cr2  1  0.573  0.571  0.750  1.0
  Fe  Fe3  1  0.081  0.085  0.024  1.0
  Fe  Fe4  1  0.081  0.085  0.476  1.0
  O  O5  1  0.233  0.756  0.250  1.0
  O  O6  1  0.213  0.782  0.750  1.0
  O  O7  1  0.282  0.286  0.036  1.0
  O  O8  1  0.282  0.286  0.464  1.0
  O  O9  1  0.686  0.681  0.547  1.0
  O  O10  1  0.686  0.681  0.953  1.0
  O  O11  1  0.752  0.234  0.250  1.0
  O  O12  1  0.779  0.209  0.750  1.0
[/CIF]
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The crystal structure described by MgCr2(FeO4)2 crystallizes in the monoclinic Pm space group. Mg(1) is bonded in a 4-coordinate geometry to one O(2), one O(6), and two equivalent O(4) atoms. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded in a tetrahedral geometry to one O(1), one O(5), and two equivalent O(3) atoms. In the second Cr site, Cr(2) is bonded in a tetrahedral geometry to one O(2), one O(6), and two equivalent O(4) atoms. Fe(1) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(3), one O(5), and one O(6) atom. There are six inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Cr(1) and two equivalent Fe(1) atoms. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), one Cr(2), and two equivalent Fe(1) atoms. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Cr(1) and one Fe(1) atom. In the fourth O site, O(4) is bonded in an L-shaped geometry to one Mg(1) and one Cr(2) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Cr(1) and two equivalent Fe(1) atoms. In the sixth O site, O(6) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), one Cr(2), and two equivalent Fe(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_MgCr2(FeO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.677
_cell_length_b   5.654
_cell_length_c   6.357
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   59.158
_symmetry_Int_Tables_number   1
_cell_volume   175.163
_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
  Mg  Mg0  1  0.843  0.832  0.750  1.0
  Cr  Cr1  1  0.392  0.393  0.250  1.0
  Cr  Cr2  1  0.573  0.571  0.750  1.0
  Fe  Fe3  1  0.081  0.085  0.024  1.0
  Fe  Fe4  1  0.081  0.085  0.476  1.0
  O  O5  1  0.233  0.756  0.250  1.0
  O  O6  1  0.213  0.782  0.750  1.0
  O  O7  1  0.282  0.286  0.036  1.0
  O  O8  1  0.282  0.286  0.464  1.0
  O  O9  1  0.686  0.681  0.547  1.0
  O  O10  1  0.686  0.681  0.953  1.0
  O  O11  1  0.752  0.234  0.250  1.0
  O  O12  1  0.779  0.209  0.750  1.0
[/CIF]
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