The material described by Fe2ZnO5 crystallizes in the orthorhombic Cmcm space group. Fe(1) is bonded to one O(1), one O(3), and three equivalent O(2) atoms to form a mixture of distorted corner and edge-sharing FeO5 trigonal bipyramids. Zn(1) is bonded in a 6-coordinate geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Fe(1) and two equivalent Zn(1) atoms to form OZn2Fe2 tetrahedra that share corners with two equivalent O(1)Zn2Fe2 tetrahedra, corners with two equivalent O(2)ZnFe3 trigonal pyramids, and edges with four equivalent O(2)ZnFe3 trigonal pyramids. In the second O site, O(2) is bonded to three equivalent Fe(1) and one Zn(1) atom to form distorted OZnFe3 trigonal pyramids that share  a cornercorner with one O(1)Zn2Fe2 tetrahedra, corners with three equivalent O(2)ZnFe3 trigonal pyramids, edges with two equivalent O(1)Zn2Fe2 tetrahedra, and edges with two equivalent O(2)ZnFe3 trigonal pyramids. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Fe(1) and one Zn(1) atom. is represented by the CIF card [CIF]
data_ZnFe2O5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.575
_cell_length_b   5.575
_cell_length_c   11.038
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   140.603
_symmetry_Int_Tables_number   1
_cell_volume   217.782
_cell_formula_units_Z   2
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  0.106  0.894  0.750  1.0
  Zn  Zn1  1  0.894  0.106  0.250  1.0
  Fe  Fe2  1  0.797  0.203  0.600  1.0
  Fe  Fe3  1  0.203  0.797  0.400  1.0
  Fe  Fe4  1  0.203  0.797  0.100  1.0
  Fe  Fe5  1  0.797  0.203  0.900  1.0
  O  O6  1  0.307  0.693  0.250  1.0
  O  O7  1  0.693  0.307  0.750  1.0
  O  O8  1  0.752  0.248  0.076  1.0
  O  O9  1  0.248  0.752  0.924  1.0
  O  O10  1  0.248  0.752  0.576  1.0
  O  O11  1  0.752  0.248  0.424  1.0
  O  O12  1  0.963  0.037  0.638  1.0
  O  O13  1  0.037  0.963  0.362  1.0
  O  O14  1  0.963  0.037  0.862  1.0
  O  O15  1  0.037  0.963  0.138  1.0
[/CIF]
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The material described by Fe2ZnO5 crystallizes in the orthorhombic Cmcm space group. Fe(1) is bonded to one O(1), one O(3), and three equivalent O(2) atoms to form a mixture of distorted corner and edge-sharing FeO5 trigonal bipyramids. Zn(1) is bonded in a 6-coordinate geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Fe(1) and two equivalent Zn(1) atoms to form OZn2Fe2 tetrahedra that share corners with two equivalent O(1)Zn2Fe2 tetrahedra, corners with two equivalent O(2)ZnFe3 trigonal pyramids, and edges with four equivalent O(2)ZnFe3 trigonal pyramids. In the second O site, O(2) is bonded to three equivalent Fe(1) and one Zn(1) atom to form distorted OZnFe3 trigonal pyramids that share  a cornercorner with one O(1)Zn2Fe2 tetrahedra, corners with three equivalent O(2)ZnFe3 trigonal pyramids, edges with two equivalent O(1)Zn2Fe2 tetrahedra, and edges with two equivalent O(2)ZnFe3 trigonal pyramids. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Fe(1) and one Zn(1) atom. is represented by the CIF card [CIF]
data_ZnFe2O5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.575
_cell_length_b   5.575
_cell_length_c   11.038
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   140.603
_symmetry_Int_Tables_number   1
_cell_volume   217.782
_cell_formula_units_Z   2
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  0.106  0.894  0.750  1.0
  Zn  Zn1  1  0.894  0.106  0.250  1.0
  Fe  Fe2  1  0.797  0.203  0.600  1.0
  Fe  Fe3  1  0.203  0.797  0.400  1.0
  Fe  Fe4  1  0.203  0.797  0.100  1.0
  Fe  Fe5  1  0.797  0.203  0.900  1.0
  O  O6  1  0.307  0.693  0.250  1.0
  O  O7  1  0.693  0.307  0.750  1.0
  O  O8  1  0.752  0.248  0.076  1.0
  O  O9  1  0.248  0.752  0.924  1.0
  O  O10  1  0.248  0.752  0.576  1.0
  O  O11  1  0.752  0.248  0.424  1.0
  O  O12  1  0.963  0.037  0.638  1.0
  O  O13  1  0.037  0.963  0.362  1.0
  O  O14  1  0.963  0.037  0.862  1.0
  O  O15  1  0.037  0.963  0.138  1.0
[/CIF]
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