data_[Zn8Cr8O28]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Zn  1.6500  1.3500  0.8800
  Cr  1.6600  1.4000  0.9400
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [7.5700]
_cell_length_b [8.4094]
_cell_length_c [10.1538]
_cell_angle_alpha [90.0000]
_cell_angle_beta [110.3709]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [Zn2Cr2O7]
_chemical_formula_sum '[Zn8 Cr8 O28]'
_cell_volume [605.9586]
_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  8  0.0558  0.3232  0.9809  1
  Cr  Cr1  8  0.1963  0.0080  0.2101  1
  O  O2  8  0.1135  0.4940  0.1338  1
  O  O3  8  0.1370  0.1579  0.6158  1
  O  O4  8  0.2390  0.1577  0.1053  1
  O  O5  4  0.0000  0.0833  0.2500  1
]