The crystal structure described by MgZn2(FeO2)4 crystallizes in the orthorhombic Imm2 space group. Mg(1) is bonded to two equivalent O(1) and two equivalent O(3) atoms to form distorted MgO4 tetrahedra that share corners with two equivalent Fe(1)O4 tetrahedra, corners with four equivalent Zn(1)O5 trigonal bipyramids, and  an edgeedge with one Fe(2)O4 tetrahedra. There are three inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to two equivalent O(3) and two equivalent O(4) atoms to form FeO4 tetrahedra that share corners with two equivalent Mg(1)O4 tetrahedra and corners with four equivalent Zn(1)O5 trigonal bipyramids. In the second Fe site, Fe(2) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form FeO4 tetrahedra that share corners with six equivalent Zn(1)O5 trigonal bipyramids and  an edgeedge with one Mg(1)O4 tetrahedra. In the third Fe site, Fe(3) is bonded in a 5-coordinate geometry to one O(4), two equivalent O(2), and two equivalent O(3) atoms. Zn(1) is bonded to one O(2), two equivalent O(1), and two equivalent O(4) atoms to form distorted ZnO5 trigonal bipyramids that share corners with two equivalent Mg(1)O4 tetrahedra, corners with two equivalent Fe(1)O4 tetrahedra, corners with three equivalent Fe(2)O4 tetrahedra, and edges with two equivalent Zn(1)O5 trigonal bipyramids. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), one Fe(2), and two equivalent Zn(1) atoms. In the second O site, O(2) is bonded to one Fe(2), two equivalent Fe(3), and one Zn(1) atom to form OZnFe3 tetrahedra that share  a cornercorner with one O(2)ZnFe3 tetrahedra, corners with four equivalent O(3)MgFe3 trigonal pyramids, and  an edgeedge with one O(2)ZnFe3 tetrahedra. In the third O site, O(3) is bonded to one Mg(1), one Fe(1), and two equivalent Fe(3) atoms to form distorted OMgFe3 trigonal pyramids that share corners with four equivalent O(2)ZnFe3 tetrahedra,  a cornercorner with one O(3)MgFe3 trigonal pyramid, and  a faceface with one O(3)MgFe3 trigonal pyramid. In the fourth O site, O(4) is bonded in a distorted rectangular see-saw-like geometry to one Fe(1), one Fe(3), and two equivalent Zn(1) atoms. is represented by the CIF file [CIF]
data_MgZn2(FeO2)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.585
_cell_length_b   6.585
_cell_length_c   5.859
_cell_angle_alpha   63.586
_cell_angle_beta   63.586
_cell_angle_gamma   54.189
_symmetry_Int_Tables_number   1
_cell_volume   178.495
_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  0.464  0.464  0.036  1.0
  Zn  Zn1  1  0.166  0.640  0.597  1.0
  Zn  Zn2  1  0.640  0.166  0.597  1.0
  Fe  Fe3  1  0.008  0.008  0.992  1.0
  Fe  Fe4  1  0.204  0.204  0.296  1.0
  Fe  Fe5  1  0.688  0.688  0.072  1.0
  Fe  Fe6  1  0.688  0.688  0.552  1.0
  O  O7  1  0.337  0.337  0.413  1.0
  O  O8  1  0.337  0.337  0.913  1.0
  O  O9  1  0.378  0.837  0.393  1.0
  O  O10  1  0.837  0.378  0.393  1.0
  O  O11  1  0.376  0.828  0.898  1.0
  O  O12  1  0.828  0.376  0.898  1.0
  O  O13  1  0.885  0.885  0.374  1.0
  O  O14  1  0.885  0.885  0.856  1.0
[/CIF]
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The crystal structure described by MgZn2(FeO2)4 crystallizes in the orthorhombic Imm2 space group. Mg(1) is bonded to two equivalent O(1) and two equivalent O(3) atoms to form distorted MgO4 tetrahedra that share corners with two equivalent Fe(1)O4 tetrahedra, corners with four equivalent Zn(1)O5 trigonal bipyramids, and  an edgeedge with one Fe(2)O4 tetrahedra. There are three inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to two equivalent O(3) and two equivalent O(4) atoms to form FeO4 tetrahedra that share corners with two equivalent Mg(1)O4 tetrahedra and corners with four equivalent Zn(1)O5 trigonal bipyramids. In the second Fe site, Fe(2) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form FeO4 tetrahedra that share corners with six equivalent Zn(1)O5 trigonal bipyramids and  an edgeedge with one Mg(1)O4 tetrahedra. In the third Fe site, Fe(3) is bonded in a 5-coordinate geometry to one O(4), two equivalent O(2), and two equivalent O(3) atoms. Zn(1) is bonded to one O(2), two equivalent O(1), and two equivalent O(4) atoms to form distorted ZnO5 trigonal bipyramids that share corners with two equivalent Mg(1)O4 tetrahedra, corners with two equivalent Fe(1)O4 tetrahedra, corners with three equivalent Fe(2)O4 tetrahedra, and edges with two equivalent Zn(1)O5 trigonal bipyramids. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), one Fe(2), and two equivalent Zn(1) atoms. In the second O site, O(2) is bonded to one Fe(2), two equivalent Fe(3), and one Zn(1) atom to form OZnFe3 tetrahedra that share  a cornercorner with one O(2)ZnFe3 tetrahedra, corners with four equivalent O(3)MgFe3 trigonal pyramids, and  an edgeedge with one O(2)ZnFe3 tetrahedra. In the third O site, O(3) is bonded to one Mg(1), one Fe(1), and two equivalent Fe(3) atoms to form distorted OMgFe3 trigonal pyramids that share corners with four equivalent O(2)ZnFe3 tetrahedra,  a cornercorner with one O(3)MgFe3 trigonal pyramid, and  a faceface with one O(3)MgFe3 trigonal pyramid. In the fourth O site, O(4) is bonded in a distorted rectangular see-saw-like geometry to one Fe(1), one Fe(3), and two equivalent Zn(1) atoms. is represented by the CIF file [CIF]
data_MgZn2(FeO2)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.585
_cell_length_b   6.585
_cell_length_c   5.859
_cell_angle_alpha   63.586
_cell_angle_beta   63.586
_cell_angle_gamma   54.189
_symmetry_Int_Tables_number   1
_cell_volume   178.495
_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  0.464  0.464  0.036  1.0
  Zn  Zn1  1  0.166  0.640  0.597  1.0
  Zn  Zn2  1  0.640  0.166  0.597  1.0
  Fe  Fe3  1  0.008  0.008  0.992  1.0
  Fe  Fe4  1  0.204  0.204  0.296  1.0
  Fe  Fe5  1  0.688  0.688  0.072  1.0
  Fe  Fe6  1  0.688  0.688  0.552  1.0
  O  O7  1  0.337  0.337  0.413  1.0
  O  O8  1  0.337  0.337  0.913  1.0
  O  O9  1  0.378  0.837  0.393  1.0
  O  O10  1  0.837  0.378  0.393  1.0
  O  O11  1  0.376  0.828  0.898  1.0
  O  O12  1  0.828  0.376  0.898  1.0
  O  O13  1  0.885  0.885  0.374  1.0
  O  O14  1  0.885  0.885  0.856  1.0
[/CIF]
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