data_[Bi2O2]
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 [P2_1/m]
_cell_length_a [3.4423]
_cell_length_b [4.5034]
_cell_length_c [5.6030]
_cell_angle_alpha [90.0000]
_cell_angle_beta [106.6293]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [BiO]
_chemical_formula_sum '[Bi2 O2]'
_cell_volume [83.2251]
_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
[
  Bi  Bi0  2  0.3744  0.2500  0.7434  1
  O  O1  2  0.4399  0.7500  0.8552  1
]