The structure described by ZnFe2O4 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(3), two equivalent O(1), and three equivalent O(4) atoms to form a mixture of corner and edge-sharing FeO6 octahedra. The corner-sharing octahedral tilt angles range from 50-61°. In the second Fe site, Fe(2) is bonded to one O(1), two equivalent O(3), and three equivalent O(2) atoms to form a mixture of corner and edge-sharing FeO6 octahedra. The corner-sharing octahedral tilt angles range from 50-61°. Zn(1) is bonded in a 7-coordinate geometry to one O(3), two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to one Fe(2), two equivalent Fe(1), and two equivalent Zn(1) atoms. In the second O site, O(2) is bonded to three equivalent Fe(2) and two equivalent Zn(1) atoms to form a mixture of distorted corner and edge-sharing OZn2Fe3 trigonal bipyramids. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Fe(1), two equivalent Fe(2), and one Zn(1) atom. In the fourth O site, O(4) is bonded to three equivalent Fe(1) and two equivalent Zn(1) atoms to form a mixture of distorted corner and edge-sharing OZn2Fe3 trigonal bipyramids. is represented by the CIF file [CIF]
data_Zn(FeO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.922
_cell_length_b   9.050
_cell_length_c   10.373
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   274.283
_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  0.750  0.753  0.654  1.0
  Zn  Zn1  1  0.250  0.247  0.346  1.0
  Zn  Zn2  1  0.750  0.253  0.846  1.0
  Zn  Zn3  1  0.250  0.747  0.154  1.0
  Fe  Fe4  1  0.750  0.937  0.880  1.0
  Fe  Fe5  1  0.250  0.063  0.120  1.0
  Fe  Fe6  1  0.750  0.437  0.620  1.0
  Fe  Fe7  1  0.250  0.563  0.380  1.0
  Fe  Fe8  1  0.750  0.914  0.401  1.0
  Fe  Fe9  1  0.250  0.086  0.599  1.0
  Fe  Fe10  1  0.750  0.414  0.099  1.0
  Fe  Fe11  1  0.250  0.586  0.901  1.0
  O  O12  1  0.750  0.709  0.326  1.0
  O  O13  1  0.250  0.291  0.674  1.0
  O  O14  1  0.750  0.209  0.174  1.0
  O  O15  1  0.250  0.791  0.826  1.0
  O  O16  1  0.750  0.617  0.034  1.0
  O  O17  1  0.250  0.383  0.966  1.0
  O  O18  1  0.750  0.117  0.466  1.0
  O  O19  1  0.250  0.883  0.534  1.0
  O  O20  1  0.750  0.537  0.789  1.0
  O  O21  1  0.250  0.463  0.211  1.0
  O  O22  1  0.750  0.037  0.711  1.0
  O  O23  1  0.250  0.963  0.289  1.0
  O  O24  1  0.750  0.906  0.073  1.0
  O  O25  1  0.250  0.094  0.927  1.0
  O  O26  1  0.750  0.406  0.427  1.0
  O  O27  1  0.250  0.594  0.573  1.0
[/CIF]
.
The structure described by ZnFe2O4 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(3), two equivalent O(1), and three equivalent O(4) atoms to form a mixture of corner and edge-sharing FeO6 octahedra. The corner-sharing octahedral tilt angles range from 50-61°. In the second Fe site, Fe(2) is bonded to one O(1), two equivalent O(3), and three equivalent O(2) atoms to form a mixture of corner and edge-sharing FeO6 octahedra. The corner-sharing octahedral tilt angles range from 50-61°. Zn(1) is bonded in a 7-coordinate geometry to one O(3), two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to one Fe(2), two equivalent Fe(1), and two equivalent Zn(1) atoms. In the second O site, O(2) is bonded to three equivalent Fe(2) and two equivalent Zn(1) atoms to form a mixture of distorted corner and edge-sharing OZn2Fe3 trigonal bipyramids. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Fe(1), two equivalent Fe(2), and one Zn(1) atom. In the fourth O site, O(4) is bonded to three equivalent Fe(1) and two equivalent Zn(1) atoms to form a mixture of distorted corner and edge-sharing OZn2Fe3 trigonal bipyramids. is represented by the CIF file [CIF]
data_Zn(FeO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.922
_cell_length_b   9.050
_cell_length_c   10.373
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   274.283
_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  0.750  0.753  0.654  1.0
  Zn  Zn1  1  0.250  0.247  0.346  1.0
  Zn  Zn2  1  0.750  0.253  0.846  1.0
  Zn  Zn3  1  0.250  0.747  0.154  1.0
  Fe  Fe4  1  0.750  0.937  0.880  1.0
  Fe  Fe5  1  0.250  0.063  0.120  1.0
  Fe  Fe6  1  0.750  0.437  0.620  1.0
  Fe  Fe7  1  0.250  0.563  0.380  1.0
  Fe  Fe8  1  0.750  0.914  0.401  1.0
  Fe  Fe9  1  0.250  0.086  0.599  1.0
  Fe  Fe10  1  0.750  0.414  0.099  1.0
  Fe  Fe11  1  0.250  0.586  0.901  1.0
  O  O12  1  0.750  0.709  0.326  1.0
  O  O13  1  0.250  0.291  0.674  1.0
  O  O14  1  0.750  0.209  0.174  1.0
  O  O15  1  0.250  0.791  0.826  1.0
  O  O16  1  0.750  0.617  0.034  1.0
  O  O17  1  0.250  0.383  0.966  1.0
  O  O18  1  0.750  0.117  0.466  1.0
  O  O19  1  0.250  0.883  0.534  1.0
  O  O20  1  0.750  0.537  0.789  1.0
  O  O21  1  0.250  0.463  0.211  1.0
  O  O22  1  0.750  0.037  0.711  1.0
  O  O23  1  0.250  0.963  0.289  1.0
  O  O24  1  0.750  0.906  0.073  1.0
  O  O25  1  0.250  0.094  0.927  1.0
  O  O26  1  0.750  0.406  0.427  1.0
  O  O27  1  0.250  0.594  0.573  1.0
[/CIF]
.