data_[K2Cu4Bi2F16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Cu  1.9000  1.3500  0.8200
  Bi  2.0200  1.6000  1.0350
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [I-4]
_cell_length_a [5.7296]
_cell_length_b [5.7296]
_cell_length_c [10.8078]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [82]
_chemical_formula_structural [KCu2BiF8]
_chemical_formula_sum '[K2 Cu4 Bi2 F16]'
_cell_volume [354.8005]
_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  2  0.0000  0.5000  0.7500  1.0
  Cu  Cu1  2  0.0000  0.0000  0.5000  1.0
  Cu  Cu2  2  0.0000  0.5000  0.2500  1.0
  Bi  Bi3  2  0.0000  0.0000  0.0000  1.0
  F  F4  8  0.1057  0.7944  0.1869  1.0
  F  F5  8  0.1704  0.2732  0.5467  1.0
]