The compound described by Fe3ZnO7 crystallizes in the orthorhombic Pnma space group. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(4), two equivalent O(1), and two equivalent O(2) atoms to form distorted FeO5 trigonal bipyramids that share corners with three equivalent Zn(1)O5 square pyramids, corners with two equivalent Fe(2)O5 trigonal bipyramids,  an edgeedge with one Fe(2)O5 trigonal bipyramid, and edges with two equivalent Fe(1)O5 trigonal bipyramids. In the second Fe site, Fe(2) is bonded to one O(3), two equivalent O(1), and two equivalent O(2) atoms to form distorted FeO5 trigonal bipyramids that share  a cornercorner with one Zn(1)O5 square pyramid, corners with four equivalent Fe(1)O5 trigonal bipyramids,  an edgeedge with one Zn(1)O5 square pyramid, and edges with two equivalent Fe(1)O5 trigonal bipyramids. Zn(1) is bonded to one O(3), two equivalent O(1), and two equivalent O(4) atoms to form distorted ZnO5 square pyramids that share  a cornercorner with one Fe(2)O5 trigonal bipyramid, corners with six equivalent Fe(1)O5 trigonal bipyramids, and  an edgeedge with one Fe(2)O5 trigonal bipyramid. There are four inequivalent O sites. In the first O site, O(3) is bonded in a bent 120 degrees geometry to one Fe(2) and one Zn(1) atom. In the second O site, O(4) is bonded in a bent 120 degrees geometry to one Fe(1) and one Zn(1) atom. In the third O site, O(1) is bonded to one Fe(2), two equivalent Fe(1), and one Zn(1) atom to form a mixture of distorted edge and corner-sharing OZnFe3 trigonal pyramids. In the fourth O site, O(2) is bonded in a trigonal non-coplanar geometry to one Fe(2) and two equivalent Fe(1) atoms. is represented by the CIF file [CIF]
data_ZnFe3O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.449
_cell_length_b   10.001
_cell_length_c   10.343
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   563.600
_cell_formula_units_Z   4
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
  Zn  Zn0  1  0.392  0.053  0.250  1.0
  Zn  Zn1  1  0.892  0.447  0.750  1.0
  Zn  Zn2  1  0.608  0.947  0.750  1.0
  Zn  Zn3  1  0.108  0.553  0.250  1.0
  Fe  Fe4  1  0.708  0.684  0.969  1.0
  Fe  Fe5  1  0.208  0.816  0.031  1.0
  Fe  Fe6  1  0.292  0.316  0.469  1.0
  Fe  Fe7  1  0.792  0.184  0.531  1.0
  Fe  Fe8  1  0.706  0.768  0.250  1.0
  Fe  Fe9  1  0.206  0.732  0.750  1.0
  Fe  Fe10  1  0.294  0.232  0.750  1.0
  Fe  Fe11  1  0.794  0.268  0.250  1.0
  Fe  Fe12  1  0.208  0.816  0.469  1.0
  Fe  Fe13  1  0.708  0.684  0.531  1.0
  Fe  Fe14  1  0.792  0.184  0.969  1.0
  Fe  Fe15  1  0.292  0.316  0.031  1.0
  O  O16  1  0.051  0.291  0.876  1.0
  O  O17  1  0.551  0.209  0.124  1.0
  O  O18  1  0.949  0.709  0.376  1.0
  O  O19  1  0.449  0.791  0.624  1.0
  O  O20  1  0.949  0.709  0.124  1.0
  O  O21  1  0.449  0.791  0.876  1.0
  O  O22  1  0.051  0.291  0.624  1.0
  O  O23  1  0.551  0.209  0.376  1.0
  O  O24  1  0.523  0.279  0.885  1.0
  O  O25  1  0.023  0.221  0.115  1.0
  O  O26  1  0.477  0.721  0.385  1.0
  O  O27  1  0.977  0.779  0.615  1.0
  O  O28  1  0.477  0.721  0.115  1.0
  O  O29  1  0.977  0.779  0.885  1.0
  O  O30  1  0.523  0.279  0.615  1.0
  O  O31  1  0.023  0.221  0.385  1.0
  O  O32  1  0.808  0.446  0.250  1.0
  O  O33  1  0.308  0.054  0.750  1.0
  O  O34  1  0.192  0.554  0.750  1.0
  O  O35  1  0.692  0.946  0.250  1.0
  O  O36  1  0.778  0.019  0.599  1.0
  O  O37  1  0.278  0.481  0.401  1.0
  O  O38  1  0.222  0.981  0.099  1.0
  O  O39  1  0.722  0.519  0.901  1.0
  O  O40  1  0.222  0.981  0.401  1.0
  O  O41  1  0.722  0.519  0.599  1.0
  O  O42  1  0.778  0.019  0.901  1.0
  O  O43  1  0.278  0.481  0.099  1.0
[/CIF]
.
The compound described by Fe3ZnO7 crystallizes in the orthorhombic Pnma space group. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(4), two equivalent O(1), and two equivalent O(2) atoms to form distorted FeO5 trigonal bipyramids that share corners with three equivalent Zn(1)O5 square pyramids, corners with two equivalent Fe(2)O5 trigonal bipyramids,  an edgeedge with one Fe(2)O5 trigonal bipyramid, and edges with two equivalent Fe(1)O5 trigonal bipyramids. In the second Fe site, Fe(2) is bonded to one O(3), two equivalent O(1), and two equivalent O(2) atoms to form distorted FeO5 trigonal bipyramids that share  a cornercorner with one Zn(1)O5 square pyramid, corners with four equivalent Fe(1)O5 trigonal bipyramids,  an edgeedge with one Zn(1)O5 square pyramid, and edges with two equivalent Fe(1)O5 trigonal bipyramids. Zn(1) is bonded to one O(3), two equivalent O(1), and two equivalent O(4) atoms to form distorted ZnO5 square pyramids that share  a cornercorner with one Fe(2)O5 trigonal bipyramid, corners with six equivalent Fe(1)O5 trigonal bipyramids, and  an edgeedge with one Fe(2)O5 trigonal bipyramid. There are four inequivalent O sites. In the first O site, O(3) is bonded in a bent 120 degrees geometry to one Fe(2) and one Zn(1) atom. In the second O site, O(4) is bonded in a bent 120 degrees geometry to one Fe(1) and one Zn(1) atom. In the third O site, O(1) is bonded to one Fe(2), two equivalent Fe(1), and one Zn(1) atom to form a mixture of distorted edge and corner-sharing OZnFe3 trigonal pyramids. In the fourth O site, O(2) is bonded in a trigonal non-coplanar geometry to one Fe(2) and two equivalent Fe(1) atoms. is represented by the CIF file [CIF]
data_ZnFe3O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.449
_cell_length_b   10.001
_cell_length_c   10.343
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   563.600
_cell_formula_units_Z   4
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
  Zn  Zn0  1  0.392  0.053  0.250  1.0
  Zn  Zn1  1  0.892  0.447  0.750  1.0
  Zn  Zn2  1  0.608  0.947  0.750  1.0
  Zn  Zn3  1  0.108  0.553  0.250  1.0
  Fe  Fe4  1  0.708  0.684  0.969  1.0
  Fe  Fe5  1  0.208  0.816  0.031  1.0
  Fe  Fe6  1  0.292  0.316  0.469  1.0
  Fe  Fe7  1  0.792  0.184  0.531  1.0
  Fe  Fe8  1  0.706  0.768  0.250  1.0
  Fe  Fe9  1  0.206  0.732  0.750  1.0
  Fe  Fe10  1  0.294  0.232  0.750  1.0
  Fe  Fe11  1  0.794  0.268  0.250  1.0
  Fe  Fe12  1  0.208  0.816  0.469  1.0
  Fe  Fe13  1  0.708  0.684  0.531  1.0
  Fe  Fe14  1  0.792  0.184  0.969  1.0
  Fe  Fe15  1  0.292  0.316  0.031  1.0
  O  O16  1  0.051  0.291  0.876  1.0
  O  O17  1  0.551  0.209  0.124  1.0
  O  O18  1  0.949  0.709  0.376  1.0
  O  O19  1  0.449  0.791  0.624  1.0
  O  O20  1  0.949  0.709  0.124  1.0
  O  O21  1  0.449  0.791  0.876  1.0
  O  O22  1  0.051  0.291  0.624  1.0
  O  O23  1  0.551  0.209  0.376  1.0
  O  O24  1  0.523  0.279  0.885  1.0
  O  O25  1  0.023  0.221  0.115  1.0
  O  O26  1  0.477  0.721  0.385  1.0
  O  O27  1  0.977  0.779  0.615  1.0
  O  O28  1  0.477  0.721  0.115  1.0
  O  O29  1  0.977  0.779  0.885  1.0
  O  O30  1  0.523  0.279  0.615  1.0
  O  O31  1  0.023  0.221  0.385  1.0
  O  O32  1  0.808  0.446  0.250  1.0
  O  O33  1  0.308  0.054  0.750  1.0
  O  O34  1  0.192  0.554  0.750  1.0
  O  O35  1  0.692  0.946  0.250  1.0
  O  O36  1  0.778  0.019  0.599  1.0
  O  O37  1  0.278  0.481  0.401  1.0
  O  O38  1  0.222  0.981  0.099  1.0
  O  O39  1  0.722  0.519  0.901  1.0
  O  O40  1  0.222  0.981  0.401  1.0
  O  O41  1  0.722  0.519  0.599  1.0
  O  O42  1  0.778  0.019  0.901  1.0
  O  O43  1  0.278  0.481  0.099  1.0
[/CIF]
.