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 [4.0659]
_cell_length_b [5.1479]
_cell_length_c [9.0426]
_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 [189.2675]
_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  0.2896  0.5773  1
  Cu  Cu1  2  0.0000  0.2086  0.2323  1
  C  C2  2  0.0000  0.2156  0.9137  1
  O  O3  2  0.0000  0.0386  0.4236  1
  O  O4  2  0.0000  0.3303  0.7889  1
  O  O5  2  0.0000  0.3516  0.0353  1
  F  F6  2  0.5000  0.1959  0.2288  1
]