data_[Re8O28]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Re  1.9000  1.3500  0.7125
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Cmc2_1]
_cell_length_a [16.9415]
_cell_length_b [7.1144]
_cell_length_c [6.9514]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [36]
_chemical_formula_structural [Re2O7]
_chemical_formula_sum '[Re8 O28]'
_cell_volume [837.8415]
_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
[
  Re  Re0  8  0.0998  0.2229  0.3429  1.0
  O  O1  8  0.0955  0.0118  0.9065  1.0
  O  O2  8  0.1120  0.3501  0.5523  1.0
  O  O3  8  0.1814  0.2588  0.2001  1.0
  O  O4  4  0.0000  0.2880  0.2328  1.0
]