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 [Fmm2]
_cell_length_a [8.0446]
_cell_length_b [15.3920]
_cell_length_c [5.8262]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [42]
_chemical_formula_structural [Re2O7]
_chemical_formula_sum '[Re8 O28]'
_cell_volume [721.4130]
_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  0.0000  0.1105  0.0897  1.0
  O  O1  16  0.1727  0.1156  0.2648  1.0
  O  O2  8  0.0000  0.1972  0.9033  1.0
  O  O3  4  0.0000  0.0000  0.9414  1.0
]