data_[K8Nb6Bi2O24]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Nb  1.6000  1.4500  0.8200
  Bi  2.0200  1.6000  1.0350
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Im-3m]
_cell_length_a [8.1988]
_cell_length_b [8.1988]
_cell_length_c [8.1988]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [229]
_chemical_formula_structural [K4Nb3BiO12]
_chemical_formula_sum '[K8 Nb6 Bi2 O24]'
_cell_volume [551.1252]
_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
[
  K  K0  8  0.2500  0.2500  0.2500  1.0
  Nb  Nb1  6  0.0000  0.0000  0.5000  1.0
  Bi  Bi2  2  0.0000  0.0000  0.0000  1.0
  O  O3  12  0.0000  0.0000  0.2575  1.0
  O  O4  12  0.0000  0.2500  0.5000  1.0
]