data_[Bi8O16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Bi  2.0200  1.6000  1.0350
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Imma]
_cell_length_a [7.1182]
_cell_length_b [7.3434]
_cell_length_c [7.3046]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [74]
_chemical_formula_structural [BiO2]
_chemical_formula_sum '[Bi8 O16]'
_cell_volume [381.8224]
_cell_formula_units_Z [8]
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
[
  Bi  Bi0  4  0.0000  0.2500  0.7435  1.0
  Bi  Bi1  4  0.2500  0.2500  0.2500  1.0
  O  O2  8  0.0000  0.0598  0.2586  1.0
  O  O3  8  0.2428  0.2500  0.9432  1.0
]