data_[Na8Bi4O12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Bi  2.0200  1.6000  1.0350
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [6.0815]
_cell_length_b [10.0665]
_cell_length_c [5.8831]
_cell_angle_alpha [90.0000]
_cell_angle_beta [111.6634]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [Na2BiO3]
_chemical_formula_sum '[Na8 Bi4 O12]'
_cell_volume [334.7229]
_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
[
  Na  Na0  4  0.0000  0.0819  0.7500  1.0
  Na  Na1  4  0.0000  0.2447  0.2500  1.0
  Bi  Bi2  4  0.0000  0.4088  0.7500  1.0
  O  O3  8  0.2128  0.4318  0.5034  1.0
  O  O4  4  0.2500  0.2500  0.0000  1.0
]