The compound described by MgZn2(FeO2)4 crystallizes in the monoclinic C2/m space group. Mg(1) is bonded to two equivalent O(2) and four equivalent O(3) atoms to form MgO6 octahedra that share corners with six equivalent Fe(3)O6 octahedra, edges with two equivalent Fe(2)O6 octahedra, and edges with four equivalent Zn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-7°. There are three inequivalent Fe sites. In the first Fe site, Fe(1) is bonded in a rectangular see-saw-like geometry to one O(1), one O(2), and two equivalent O(3) atoms. In the second Fe site, Fe(2) is bonded to two equivalent O(1) and four equivalent O(3) atoms to form FeO6 octahedra that share edges with two equivalent Mg(1)O6 octahedra, edges with two equivalent Fe(3)O6 octahedra, and edges with four equivalent Zn(1)O6 octahedra. In the third Fe site, Fe(3) is bonded to two equivalent O(2) and four equivalent O(3) atoms to form FeO6 octahedra that share corners with six equivalent Mg(1)O6 octahedra, edges with two equivalent Fe(2)O6 octahedra, and edges with four equivalent Zn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-7°. Zn(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form ZnO6 octahedra that share edges with two equivalent Mg(1)O6 octahedra, edges with two equivalent Fe(2)O6 octahedra, edges with two equivalent Fe(3)O6 octahedra, and edges with two equivalent Zn(1)O6 octahedra. There are three inequivalent O sites. In the first O site, O(1) is bonded to one Fe(1), one Fe(2), and two equivalent Zn(1) atoms to form OZn2Fe2 tetrahedra that share corners with six equivalent O(3)MgZnFe3 square pyramids, corners with three equivalent O(1)Zn2Fe2 tetrahedra, corners with three equivalent O(2)MgZn2Fe2 trigonal bipyramids, edges with two equivalent O(3)MgZnFe3 square pyramids, and  an edgeedge with one O(2)MgZn2Fe2 trigonal bipyramid. In the second O site, O(2) is bonded to one Mg(1), one Fe(1), one Fe(3), and two equivalent Zn(1) atoms to form distorted OMgZn2Fe2 trigonal bipyramids that share corners with two equivalent O(3)MgZnFe3 square pyramids, corners with three equivalent O(1)Zn2Fe2 tetrahedra, corners with four equivalent O(2)MgZn2Fe2 trigonal bipyramids, edges with six equivalent O(3)MgZnFe3 square pyramids, and  an edgeedge with one O(1)Zn2Fe2 tetrahedra. In the third O site, O(3) is bonded to one Mg(1), one Fe(1), one Fe(2), one Fe(3), and one Zn(1) atom to form OMgZnFe3 square pyramids that share corners with five equivalent O(3)MgZnFe3 square pyramids, corners with three equivalent O(1)Zn2Fe2 tetrahedra,  a cornercorner with one O(2)MgZn2Fe2 trigonal bipyramid, edges with three equivalent O(3)MgZnFe3 square pyramids,  an edgeedge with one O(1)Zn2Fe2 tetrahedra, and edges with three equivalent O(2)MgZn2Fe2 trigonal bipyramids. is represented by the CIF file [CIF]
data_MgZn2(FeO2)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.343
_cell_length_b   6.343
_cell_length_c   6.419
_cell_angle_alpha   56.266
_cell_angle_beta   56.266
_cell_angle_gamma   56.428
_symmetry_Int_Tables_number   1
_cell_volume   167.066
_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  0.125  0.125  0.125  1.0
  Zn  Zn1  1  0.125  0.625  0.625  1.0
  Zn  Zn2  1  0.625  0.125  0.625  1.0
  Fe  Fe3  1  0.942  0.942  0.012  1.0
  Fe  Fe4  1  0.308  0.308  0.238  1.0
  Fe  Fe5  1  0.625  0.625  0.125  1.0
  Fe  Fe6  1  0.625  0.625  0.625  1.0
  O  O7  1  0.399  0.399  0.408  1.0
  O  O8  1  0.388  0.388  0.858  1.0
  O  O9  1  0.394  0.877  0.351  1.0
  O  O10  1  0.877  0.394  0.351  1.0
  O  O11  1  0.373  0.856  0.899  1.0
  O  O12  1  0.856  0.373  0.899  1.0
  O  O13  1  0.862  0.862  0.392  1.0
  O  O14  1  0.851  0.851  0.842  1.0
[/CIF]
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The compound described by MgZn2(FeO2)4 crystallizes in the monoclinic C2/m space group. Mg(1) is bonded to two equivalent O(2) and four equivalent O(3) atoms to form MgO6 octahedra that share corners with six equivalent Fe(3)O6 octahedra, edges with two equivalent Fe(2)O6 octahedra, and edges with four equivalent Zn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-7°. There are three inequivalent Fe sites. In the first Fe site, Fe(1) is bonded in a rectangular see-saw-like geometry to one O(1), one O(2), and two equivalent O(3) atoms. In the second Fe site, Fe(2) is bonded to two equivalent O(1) and four equivalent O(3) atoms to form FeO6 octahedra that share edges with two equivalent Mg(1)O6 octahedra, edges with two equivalent Fe(3)O6 octahedra, and edges with four equivalent Zn(1)O6 octahedra. In the third Fe site, Fe(3) is bonded to two equivalent O(2) and four equivalent O(3) atoms to form FeO6 octahedra that share corners with six equivalent Mg(1)O6 octahedra, edges with two equivalent Fe(2)O6 octahedra, and edges with four equivalent Zn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-7°. Zn(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form ZnO6 octahedra that share edges with two equivalent Mg(1)O6 octahedra, edges with two equivalent Fe(2)O6 octahedra, edges with two equivalent Fe(3)O6 octahedra, and edges with two equivalent Zn(1)O6 octahedra. There are three inequivalent O sites. In the first O site, O(1) is bonded to one Fe(1), one Fe(2), and two equivalent Zn(1) atoms to form OZn2Fe2 tetrahedra that share corners with six equivalent O(3)MgZnFe3 square pyramids, corners with three equivalent O(1)Zn2Fe2 tetrahedra, corners with three equivalent O(2)MgZn2Fe2 trigonal bipyramids, edges with two equivalent O(3)MgZnFe3 square pyramids, and  an edgeedge with one O(2)MgZn2Fe2 trigonal bipyramid. In the second O site, O(2) is bonded to one Mg(1), one Fe(1), one Fe(3), and two equivalent Zn(1) atoms to form distorted OMgZn2Fe2 trigonal bipyramids that share corners with two equivalent O(3)MgZnFe3 square pyramids, corners with three equivalent O(1)Zn2Fe2 tetrahedra, corners with four equivalent O(2)MgZn2Fe2 trigonal bipyramids, edges with six equivalent O(3)MgZnFe3 square pyramids, and  an edgeedge with one O(1)Zn2Fe2 tetrahedra. In the third O site, O(3) is bonded to one Mg(1), one Fe(1), one Fe(2), one Fe(3), and one Zn(1) atom to form OMgZnFe3 square pyramids that share corners with five equivalent O(3)MgZnFe3 square pyramids, corners with three equivalent O(1)Zn2Fe2 tetrahedra,  a cornercorner with one O(2)MgZn2Fe2 trigonal bipyramid, edges with three equivalent O(3)MgZnFe3 square pyramids,  an edgeedge with one O(1)Zn2Fe2 tetrahedra, and edges with three equivalent O(2)MgZn2Fe2 trigonal bipyramids. is represented by the CIF file [CIF]
data_MgZn2(FeO2)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.343
_cell_length_b   6.343
_cell_length_c   6.419
_cell_angle_alpha   56.266
_cell_angle_beta   56.266
_cell_angle_gamma   56.428
_symmetry_Int_Tables_number   1
_cell_volume   167.066
_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  0.125  0.125  0.125  1.0
  Zn  Zn1  1  0.125  0.625  0.625  1.0
  Zn  Zn2  1  0.625  0.125  0.625  1.0
  Fe  Fe3  1  0.942  0.942  0.012  1.0
  Fe  Fe4  1  0.308  0.308  0.238  1.0
  Fe  Fe5  1  0.625  0.625  0.125  1.0
  Fe  Fe6  1  0.625  0.625  0.625  1.0
  O  O7  1  0.399  0.399  0.408  1.0
  O  O8  1  0.388  0.388  0.858  1.0
  O  O9  1  0.394  0.877  0.351  1.0
  O  O10  1  0.877  0.394  0.351  1.0
  O  O11  1  0.373  0.856  0.899  1.0
  O  O12  1  0.856  0.373  0.899  1.0
  O  O13  1  0.862  0.862  0.392  1.0
  O  O14  1  0.851  0.851  0.842  1.0
[/CIF]
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