data_[K2Cu2C2O6F2]
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
  C  2.5500  0.7000  0.3000
  O  3.4400  0.6000  1.2600
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [Pmc2_1]
_cell_length_a [4.0283]
_cell_length_b [5.2536]
_cell_length_c [9.0366]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [26]
_chemical_formula_structural [KCuCO3F]
_chemical_formula_sum '[K2 Cu2 C2 O6 F2]'
_cell_volume [191.2422]
_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  0.5000  0.3001  0.5768  1.0
  Cu  Cu1  2  0.0000  0.1974  0.2310  1.0
  C  C2  2  0.0000  0.2110  0.9139  1.0
  O  O3  2  0.0000  0.0387  0.4237  1.0
  O  O4  2  0.0000  0.3246  0.7898  1.0
  O  O5  2  0.0000  0.3431  0.0365  1.0
  F  F6  2  0.5000  0.1877  0.2284  1.0
]