data_[Cs4K4Nb8O24]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Cs  0.7900  2.6000  1.8100
  K  0.8200  2.2000  1.5200
  Nb  1.6000  1.4500  0.8200
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [11.9847]
_cell_length_b [12.5198]
_cell_length_c [6.5793]
_cell_angle_alpha [90.0000]
_cell_angle_beta [105.6727]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [CsKNb2O6]
_chemical_formula_sum '[Cs4 K4 Nb8 O24]'
_cell_volume [950.4988]
_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
[
  Cs  Cs0  4  0.0000  0.1051  0.7500  1.0
  K  K1  4  0.0000  0.2627  0.2500  1.0
  Nb  Nb2  8  0.1980  0.4230  0.7103  1.0
  O  O3  8  0.1264  0.2957  0.6495  1.0
  O  O4  8  0.1466  0.1003  0.2131  1.0
  O  O5  8  0.1566  0.4917  0.9499  1.0
]