data_[K4Nb4Bi8O24]
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 [C2/c]
_cell_length_a [10.9159]
_cell_length_b [10.3077]
_cell_length_c [6.3395]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.6188]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [KNb(BiO3)2]
_chemical_formula_sum '[K4 Nb4 Bi8 O24]'
_cell_volume [713.2686]
_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
[
  K  K0  4  0.0000  0.0824  0.2500  1.0
  Nb  Nb1  4  0.0000  0.2692  0.7500  1.0
  Bi  Bi2  8  0.1643  0.3866  0.3286  1.0
  O  O3  8  0.0348  0.3201  0.0429  1.0
  O  O4  8  0.1196  0.1411  0.6844  1.0
  O  O5  8  0.1555  0.4242  0.6891  1.0
]