data_[K8Cu4F16]
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
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [Cmce]
_cell_length_a [12.8958]
_cell_length_b [5.9308]
_cell_length_c [5.9328]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [64]
_chemical_formula_structural [K2CuF4]
_chemical_formula_sum '[K8 Cu4 F16]'
_cell_volume [453.7570]
_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  8  0.1422  0.0000  0.5000  1.0
  Cu  Cu1  4  0.0000  0.0000  0.0000  1.0
  F  F2  8  0.0000  0.2320  0.2320  1.0
  F  F3  8  0.1535  0.0000  0.0000  1.0
]