data_[Ba8Bi4O2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ba  0.8900  2.1500  1.4900
  Bi  2.0200  1.6000  1.0350
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [I4mm]
_cell_length_a [5.3673]
_cell_length_b [5.3673]
_cell_length_c [18.9530]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [107]
_chemical_formula_structural [Ba4Bi2O]
_chemical_formula_sum '[Ba8 Bi4 O2]'
_cell_volume [545.9950]
_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
[
  Ba  Ba0  4  0.0000  0.5000  0.4974  1.0
  Ba  Ba1  2  0.0000  0.0000  0.1759  1.0
  Ba  Ba2  2  0.0000  0.0000  0.8340  1.0
  Bi  Bi3  2  0.0000  0.0000  0.3607  1.0
  Bi  Bi4  2  0.0000  0.0000  0.6363  1.0
  O  O5  2  0.0000  0.0000  0.9811  1.0
]