The compound described by ZnFe2O4 crystallizes in the monoclinic Pm space group. There are eight inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(14), one O(9), two equivalent O(10), and two equivalent O(8) atoms to form a mixture of corner and edge-sharing FeO6 octahedra. The corner-sharing octahedral tilt angles range from 49-64°. In the second Fe site, Fe(2) is bonded to one O(12), one O(16), two equivalent O(11), and two equivalent O(5) atoms to form a mixture of corner and edge-sharing FeO6 octahedra. The corner-sharing octahedral tilt angles range from 50-60°. In the third Fe site, Fe(3) is bonded to one O(11), one O(15), two equivalent O(12), and two equivalent O(6) atoms to form a mixture of corner and edge-sharing FeO6 octahedra. The corner-sharing octahedral tilt angles range from 50-60°. In the fourth Fe site, Fe(4) is bonded to one O(10), one O(13), two equivalent O(7), and two equivalent O(9) atoms to form a mixture of corner and edge-sharing FeO6 octahedra. The corner-sharing octahedral tilt angles range from 49-62°. In the fifth Fe site, Fe(5) is bonded to one O(4), one O(8), two equivalent O(15), and two equivalent O(3) atoms to form a mixture of corner and edge-sharing FeO6 octahedra. The corner-sharing octahedral tilt angles range from 49-60°. In the sixth Fe site, Fe(6) is bonded to one O(3), one O(7), two equivalent O(16), and two equivalent O(4) atoms to form a mixture of corner and edge-sharing FeO6 octahedra. The corner-sharing octahedral tilt angles range from 49-60°. In the seventh Fe site, Fe(7) is bonded to one O(2), one O(6), two equivalent O(1), and two equivalent O(14) atoms to form a mixture of corner and edge-sharing FeO6 octahedra. The corner-sharing octahedral tilt angles range from 50-64°. In the eighth Fe site, Fe(8) is bonded to one O(1), one O(5), two equivalent O(13), and two equivalent O(2) atoms to form a mixture of corner and edge-sharing FeO6 octahedra. The corner-sharing octahedral tilt angles range from 50-62°. There are four inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 6-coordinate geometry to two equivalent O(11), two equivalent O(14), and two equivalent O(3) atoms. In the second Zn site, Zn(2) is bonded in a 7-coordinate geometry to one O(7), two equivalent O(12), two equivalent O(13), and two equivalent O(4) atoms. In the third Zn site, Zn(3) is bonded in a 7-coordinate geometry to one O(6), two equivalent O(1), two equivalent O(15), and two equivalent O(9) atoms. In the fourth Zn site, Zn(4) is bonded in a 7-coordinate geometry to one O(5), two equivalent O(10), two equivalent O(16), and two equivalent O(2) atoms. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded to one Fe(8), two equivalent Fe(7), and two equivalent Zn(3) atoms to form distorted OZn2Fe3 trigonal bipyramids that share corners with two equivalent O(9)Zn2Fe3 trigonal bipyramids,  an edgeedge with one O(9)Zn2Fe3 trigonal bipyramid, edges with two equivalent O(1)Zn2Fe3 trigonal bipyramids, edges with two equivalent O(2)Zn2Fe3 trigonal bipyramids, and edges with two equivalent O(6)ZnFe3 trigonal pyramids. In the second O site, O(2) is bonded to one Fe(7), two equivalent Fe(8), and two equivalent Zn(4) atoms to form distorted OZn2Fe3 trigonal bipyramids that share corners with two equivalent O(10)Zn2Fe3 trigonal bipyramids,  a cornercorner with one O(6)ZnFe3 trigonal pyramid,  an edgeedge with one O(10)Zn2Fe3 trigonal bipyramid, edges with two equivalent O(1)Zn2Fe3 trigonal bipyramids, and edges with two equivalent O(2)Zn2Fe3 trigonal bipyramids. In the third O site, O(3) is bonded to one Fe(6), two equivalent Fe(5), and two equivalent Zn(1) atoms to form distorted OZn2Fe3 trigonal bipyramids that share corners with two equivalent O(11)Zn2Fe3 trigonal bipyramids,  a cornercorner with one O(7)ZnFe3 trigonal pyramid,  an edgeedge with one O(11)Zn2Fe3 trigonal bipyramid, edges with two equivalent O(3)Zn2Fe3 trigonal bipyramids, and edges with two equivalent O(4)Zn2Fe3 trigonal bipyramids. In the fourth O site, O(4) is bonded to one Fe(5), two equivalent Fe(6), and two equivalent Zn(2) atoms to form distorted OZn2Fe3 trigonal bipyramids that share corners with two equivalent O(12)Zn2Fe3 trigonal bipyramids,  an edgeedge with one O(12)Zn2Fe3 trigonal bipyramid, edges with two equivalent O(3)Zn2Fe3 trigonal bipyramids, edges with two equivalent O(4)Zn2Fe3 trigonal bipyramids, and edges with two equivalent O(7)ZnFe3 trigonal pyramids. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Fe(8), two equivalent Fe(2), and one Zn(4) atom. In the sixth O site, O(6) is bonded to one Fe(7), two equivalent Fe(3), and one Zn(3) atom to form distorted OZnFe3 trigonal pyramids that share  a cornercorner with one O(2)Zn2Fe3 trigonal bipyramid, corners with two equivalent O(11)Zn2Fe3 trigonal bipyramids, corners with two equivalent O(12)Zn2Fe3 trigonal bipyramids, corners with two equivalent O(9)Zn2Fe3 trigonal bipyramids, corners with two equivalent O(6)ZnFe3 trigonal pyramids,  an edgeedge with one O(12)Zn2Fe3 trigonal bipyramid, and edges with two equivalent O(1)Zn2Fe3 trigonal bipyramids. In the seventh O site, O(7) is bonded to one Fe(6), two equivalent Fe(4), and one Zn(2) atom to form distorted OZnFe3 trigonal pyramids that share  a cornercorner with one O(3)Zn2Fe3 trigonal bipyramid, corners with two equivalent O(10)Zn2Fe3 trigonal bipyramids, corners with two equivalent O(12)Zn2Fe3 trigonal bipyramids, corners with two equivalent O(9)Zn2Fe3 trigonal bipyramids, corners with two equivalent O(7)ZnFe3 trigonal pyramids,  an edgeedge with one O(9)Zn2Fe3 trigonal bipyramid, and edges with two equivalent O(4)Zn2Fe3 trigonal bipyramids. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Fe(5) and two equivalent Fe(1) atoms. In the ninth O site, O(9) is bonded to one Fe(1), two equivalent Fe(4), and two equivalent Zn(3) atoms to form OZn2Fe3 trigonal bipyramids that share corners with two equivalent O(1)Zn2Fe3 trigonal bipyramids, corners with two equivalent O(6)ZnFe3 trigonal pyramids, corners with two equivalent O(7)ZnFe3 trigonal pyramids,  an edgeedge with one O(1)Zn2Fe3 trigonal bipyramid, edges with two equivalent O(10)Zn2Fe3 trigonal bipyramids, edges with two equivalent O(9)Zn2Fe3 trigonal bipyramids, and  an edgeedge with one O(7)ZnFe3 trigonal pyramid. In the tenth O site, O(10) is bonded to one Fe(4), two equivalent Fe(1), and two equivalent Zn(4) atoms to form OZn2Fe3 trigonal bipyramids that share corners with two equivalent O(2)Zn2Fe3 trigonal bipyramids, corners with two equivalent O(7)ZnFe3 trigonal pyramids,  an edgeedge with one O(2)Zn2Fe3 trigonal bipyramid, edges with two equivalent O(10)Zn2Fe3 trigonal bipyramids, and edges with two equivalent O(9)Zn2Fe3 trigonal bipyramids. In the eleventh O site, O(11) is bonded to one Fe(3), two equivalent Fe(2), and two equivalent Zn(1) atoms to form distorted OZn2Fe3 trigonal bipyramids that share corners with two equivalent O(3)Zn2Fe3 trigonal bipyramids, corners with two equivalent O(6)ZnFe3 trigonal pyramids,  an edgeedge with one O(3)Zn2Fe3 trigonal bipyramid, edges with two equivalent O(11)Zn2Fe3 trigonal bipyramids, and edges with two equivalent O(12)Zn2Fe3 trigonal bipyramids. In the twelfth O site, O(12) is bonded to one Fe(2), two equivalent Fe(3), and two equivalent Zn(2) atoms to form distorted OZn2Fe3 trigonal bipyramids that share corners with two equivalent O(4)Zn2Fe3 trigonal bipyramids, corners with two equivalent O(6)ZnFe3 trigonal pyramids, corners with two equivalent O(7)ZnFe3 trigonal pyramids,  an edgeedge with one O(4)Zn2Fe3 trigonal bipyramid, edges with two equivalent O(11)Zn2Fe3 trigonal bipyramids, edges with two equivalent O(12)Zn2Fe3 trigonal bipyramids, and  an edgeedge with one O(6)ZnFe3 trigonal pyramid. In the thirteenth O site, O(13) is bonded in a 5-coordinate geometry to one Fe(4), two equivalent Fe(8), and two equivalent Zn(2) atoms. In the fourteenth O site, O(14) is bonded in a 5-coordinate geometry to one Fe(1), two equivalent Fe(7), and two equivalent Zn(1) atoms. In the fifteenth O site, O(15) is bonded in a 5-coordinate geometry to one Fe(3), two equivalent Fe(5), and two equivalent Zn(3) atoms. In the sixteenth O site, O(16) is bonded in a 5-coordinate geometry to one Fe(2), two equivalent Fe(6), and two equivalent Zn(4) atoms. is represented by the CIF card [CIF]
data_Zn(FeO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.921
_cell_length_b   9.052
_cell_length_c   10.414
_cell_angle_alpha   88.327
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   275.235
_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  0.000  0.755  0.354  1.0
  Zn  Zn1  1  0.500  0.243  0.653  1.0
  Zn  Zn2  1  0.000  0.249  0.152  1.0
  Zn  Zn3  1  0.500  0.754  0.845  1.0
  Fe  Fe4  1  0.500  0.590  0.101  1.0
  Fe  Fe5  1  0.000  0.916  0.602  1.0
  Fe  Fe6  1  0.500  0.087  0.401  1.0
  Fe  Fe7  1  0.000  0.407  0.897  1.0
  Fe  Fe8  1  0.000  0.432  0.383  1.0
  Fe  Fe9  1  0.500  0.565  0.618  1.0
  Fe  Fe10  1  0.000  0.941  0.121  1.0
  Fe  Fe11  1  0.500  0.058  0.878  1.0
  O  O12  1  0.500  0.091  0.065  1.0
  O  O13  1  0.000  0.919  0.928  1.0
  O  O14  1  0.500  0.594  0.426  1.0
  O  O15  1  0.000  0.406  0.573  1.0
  O  O16  1  0.500  0.960  0.715  1.0
  O  O17  1  0.000  0.045  0.286  1.0
  O  O18  1  0.500  0.462  0.782  1.0
  O  O19  1  0.000  0.526  0.213  1.0
  O  O20  1  0.500  0.376  0.034  1.0
  O  O21  1  0.000  0.629  0.962  1.0
  O  O22  1  0.500  0.884  0.470  1.0
  O  O23  1  0.000  0.117  0.532  1.0
  O  O24  1  0.000  0.197  0.822  1.0
  O  O25  1  0.500  0.797  0.182  1.0
  O  O26  1  0.500  0.290  0.331  1.0
  O  O27  1  0.000  0.710  0.673  1.0
[/CIF]
.
The compound described by ZnFe2O4 crystallizes in the monoclinic Pm space group. There are eight inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(14), one O(9), two equivalent O(10), and two equivalent O(8) atoms to form a mixture of corner and edge-sharing FeO6 octahedra. The corner-sharing octahedral tilt angles range from 49-64°. In the second Fe site, Fe(2) is bonded to one O(12), one O(16), two equivalent O(11), and two equivalent O(5) atoms to form a mixture of corner and edge-sharing FeO6 octahedra. The corner-sharing octahedral tilt angles range from 50-60°. In the third Fe site, Fe(3) is bonded to one O(11), one O(15), two equivalent O(12), and two equivalent O(6) atoms to form a mixture of corner and edge-sharing FeO6 octahedra. The corner-sharing octahedral tilt angles range from 50-60°. In the fourth Fe site, Fe(4) is bonded to one O(10), one O(13), two equivalent O(7), and two equivalent O(9) atoms to form a mixture of corner and edge-sharing FeO6 octahedra. The corner-sharing octahedral tilt angles range from 49-62°. In the fifth Fe site, Fe(5) is bonded to one O(4), one O(8), two equivalent O(15), and two equivalent O(3) atoms to form a mixture of corner and edge-sharing FeO6 octahedra. The corner-sharing octahedral tilt angles range from 49-60°. In the sixth Fe site, Fe(6) is bonded to one O(3), one O(7), two equivalent O(16), and two equivalent O(4) atoms to form a mixture of corner and edge-sharing FeO6 octahedra. The corner-sharing octahedral tilt angles range from 49-60°. In the seventh Fe site, Fe(7) is bonded to one O(2), one O(6), two equivalent O(1), and two equivalent O(14) atoms to form a mixture of corner and edge-sharing FeO6 octahedra. The corner-sharing octahedral tilt angles range from 50-64°. In the eighth Fe site, Fe(8) is bonded to one O(1), one O(5), two equivalent O(13), and two equivalent O(2) atoms to form a mixture of corner and edge-sharing FeO6 octahedra. The corner-sharing octahedral tilt angles range from 50-62°. There are four inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 6-coordinate geometry to two equivalent O(11), two equivalent O(14), and two equivalent O(3) atoms. In the second Zn site, Zn(2) is bonded in a 7-coordinate geometry to one O(7), two equivalent O(12), two equivalent O(13), and two equivalent O(4) atoms. In the third Zn site, Zn(3) is bonded in a 7-coordinate geometry to one O(6), two equivalent O(1), two equivalent O(15), and two equivalent O(9) atoms. In the fourth Zn site, Zn(4) is bonded in a 7-coordinate geometry to one O(5), two equivalent O(10), two equivalent O(16), and two equivalent O(2) atoms. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded to one Fe(8), two equivalent Fe(7), and two equivalent Zn(3) atoms to form distorted OZn2Fe3 trigonal bipyramids that share corners with two equivalent O(9)Zn2Fe3 trigonal bipyramids,  an edgeedge with one O(9)Zn2Fe3 trigonal bipyramid, edges with two equivalent O(1)Zn2Fe3 trigonal bipyramids, edges with two equivalent O(2)Zn2Fe3 trigonal bipyramids, and edges with two equivalent O(6)ZnFe3 trigonal pyramids. In the second O site, O(2) is bonded to one Fe(7), two equivalent Fe(8), and two equivalent Zn(4) atoms to form distorted OZn2Fe3 trigonal bipyramids that share corners with two equivalent O(10)Zn2Fe3 trigonal bipyramids,  a cornercorner with one O(6)ZnFe3 trigonal pyramid,  an edgeedge with one O(10)Zn2Fe3 trigonal bipyramid, edges with two equivalent O(1)Zn2Fe3 trigonal bipyramids, and edges with two equivalent O(2)Zn2Fe3 trigonal bipyramids. In the third O site, O(3) is bonded to one Fe(6), two equivalent Fe(5), and two equivalent Zn(1) atoms to form distorted OZn2Fe3 trigonal bipyramids that share corners with two equivalent O(11)Zn2Fe3 trigonal bipyramids,  a cornercorner with one O(7)ZnFe3 trigonal pyramid,  an edgeedge with one O(11)Zn2Fe3 trigonal bipyramid, edges with two equivalent O(3)Zn2Fe3 trigonal bipyramids, and edges with two equivalent O(4)Zn2Fe3 trigonal bipyramids. In the fourth O site, O(4) is bonded to one Fe(5), two equivalent Fe(6), and two equivalent Zn(2) atoms to form distorted OZn2Fe3 trigonal bipyramids that share corners with two equivalent O(12)Zn2Fe3 trigonal bipyramids,  an edgeedge with one O(12)Zn2Fe3 trigonal bipyramid, edges with two equivalent O(3)Zn2Fe3 trigonal bipyramids, edges with two equivalent O(4)Zn2Fe3 trigonal bipyramids, and edges with two equivalent O(7)ZnFe3 trigonal pyramids. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Fe(8), two equivalent Fe(2), and one Zn(4) atom. In the sixth O site, O(6) is bonded to one Fe(7), two equivalent Fe(3), and one Zn(3) atom to form distorted OZnFe3 trigonal pyramids that share  a cornercorner with one O(2)Zn2Fe3 trigonal bipyramid, corners with two equivalent O(11)Zn2Fe3 trigonal bipyramids, corners with two equivalent O(12)Zn2Fe3 trigonal bipyramids, corners with two equivalent O(9)Zn2Fe3 trigonal bipyramids, corners with two equivalent O(6)ZnFe3 trigonal pyramids,  an edgeedge with one O(12)Zn2Fe3 trigonal bipyramid, and edges with two equivalent O(1)Zn2Fe3 trigonal bipyramids. In the seventh O site, O(7) is bonded to one Fe(6), two equivalent Fe(4), and one Zn(2) atom to form distorted OZnFe3 trigonal pyramids that share  a cornercorner with one O(3)Zn2Fe3 trigonal bipyramid, corners with two equivalent O(10)Zn2Fe3 trigonal bipyramids, corners with two equivalent O(12)Zn2Fe3 trigonal bipyramids, corners with two equivalent O(9)Zn2Fe3 trigonal bipyramids, corners with two equivalent O(7)ZnFe3 trigonal pyramids,  an edgeedge with one O(9)Zn2Fe3 trigonal bipyramid, and edges with two equivalent O(4)Zn2Fe3 trigonal bipyramids. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Fe(5) and two equivalent Fe(1) atoms. In the ninth O site, O(9) is bonded to one Fe(1), two equivalent Fe(4), and two equivalent Zn(3) atoms to form OZn2Fe3 trigonal bipyramids that share corners with two equivalent O(1)Zn2Fe3 trigonal bipyramids, corners with two equivalent O(6)ZnFe3 trigonal pyramids, corners with two equivalent O(7)ZnFe3 trigonal pyramids,  an edgeedge with one O(1)Zn2Fe3 trigonal bipyramid, edges with two equivalent O(10)Zn2Fe3 trigonal bipyramids, edges with two equivalent O(9)Zn2Fe3 trigonal bipyramids, and  an edgeedge with one O(7)ZnFe3 trigonal pyramid. In the tenth O site, O(10) is bonded to one Fe(4), two equivalent Fe(1), and two equivalent Zn(4) atoms to form OZn2Fe3 trigonal bipyramids that share corners with two equivalent O(2)Zn2Fe3 trigonal bipyramids, corners with two equivalent O(7)ZnFe3 trigonal pyramids,  an edgeedge with one O(2)Zn2Fe3 trigonal bipyramid, edges with two equivalent O(10)Zn2Fe3 trigonal bipyramids, and edges with two equivalent O(9)Zn2Fe3 trigonal bipyramids. In the eleventh O site, O(11) is bonded to one Fe(3), two equivalent Fe(2), and two equivalent Zn(1) atoms to form distorted OZn2Fe3 trigonal bipyramids that share corners with two equivalent O(3)Zn2Fe3 trigonal bipyramids, corners with two equivalent O(6)ZnFe3 trigonal pyramids,  an edgeedge with one O(3)Zn2Fe3 trigonal bipyramid, edges with two equivalent O(11)Zn2Fe3 trigonal bipyramids, and edges with two equivalent O(12)Zn2Fe3 trigonal bipyramids. In the twelfth O site, O(12) is bonded to one Fe(2), two equivalent Fe(3), and two equivalent Zn(2) atoms to form distorted OZn2Fe3 trigonal bipyramids that share corners with two equivalent O(4)Zn2Fe3 trigonal bipyramids, corners with two equivalent O(6)ZnFe3 trigonal pyramids, corners with two equivalent O(7)ZnFe3 trigonal pyramids,  an edgeedge with one O(4)Zn2Fe3 trigonal bipyramid, edges with two equivalent O(11)Zn2Fe3 trigonal bipyramids, edges with two equivalent O(12)Zn2Fe3 trigonal bipyramids, and  an edgeedge with one O(6)ZnFe3 trigonal pyramid. In the thirteenth O site, O(13) is bonded in a 5-coordinate geometry to one Fe(4), two equivalent Fe(8), and two equivalent Zn(2) atoms. In the fourteenth O site, O(14) is bonded in a 5-coordinate geometry to one Fe(1), two equivalent Fe(7), and two equivalent Zn(1) atoms. In the fifteenth O site, O(15) is bonded in a 5-coordinate geometry to one Fe(3), two equivalent Fe(5), and two equivalent Zn(3) atoms. In the sixteenth O site, O(16) is bonded in a 5-coordinate geometry to one Fe(2), two equivalent Fe(6), and two equivalent Zn(4) atoms. is represented by the CIF card [CIF]
data_Zn(FeO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.921
_cell_length_b   9.052
_cell_length_c   10.414
_cell_angle_alpha   88.327
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   275.235
_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  0.000  0.755  0.354  1.0
  Zn  Zn1  1  0.500  0.243  0.653  1.0
  Zn  Zn2  1  0.000  0.249  0.152  1.0
  Zn  Zn3  1  0.500  0.754  0.845  1.0
  Fe  Fe4  1  0.500  0.590  0.101  1.0
  Fe  Fe5  1  0.000  0.916  0.602  1.0
  Fe  Fe6  1  0.500  0.087  0.401  1.0
  Fe  Fe7  1  0.000  0.407  0.897  1.0
  Fe  Fe8  1  0.000  0.432  0.383  1.0
  Fe  Fe9  1  0.500  0.565  0.618  1.0
  Fe  Fe10  1  0.000  0.941  0.121  1.0
  Fe  Fe11  1  0.500  0.058  0.878  1.0
  O  O12  1  0.500  0.091  0.065  1.0
  O  O13  1  0.000  0.919  0.928  1.0
  O  O14  1  0.500  0.594  0.426  1.0
  O  O15  1  0.000  0.406  0.573  1.0
  O  O16  1  0.500  0.960  0.715  1.0
  O  O17  1  0.000  0.045  0.286  1.0
  O  O18  1  0.500  0.462  0.782  1.0
  O  O19  1  0.000  0.526  0.213  1.0
  O  O20  1  0.500  0.376  0.034  1.0
  O  O21  1  0.000  0.629  0.962  1.0
  O  O22  1  0.500  0.884  0.470  1.0
  O  O23  1  0.000  0.117  0.532  1.0
  O  O24  1  0.000  0.197  0.822  1.0
  O  O25  1  0.500  0.797  0.182  1.0
  O  O26  1  0.500  0.290  0.331  1.0
  O  O27  1  0.000  0.710  0.673  1.0
[/CIF]
.