data_[K8Na4Cu4Cl20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Na  0.9300  1.8000  1.1600
  Cu  1.9000  1.3500  0.8200
  Cl  3.1600  1.0000  0.7800
]
_symmetry_space_group_name_H-M [Cmc2_1]
_cell_length_a [4.0895]
_cell_length_b [18.8239]
_cell_length_c [13.0574]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [36]
_chemical_formula_structural [K2NaCuCl5]
_chemical_formula_sum '[K8 Na4 Cu4 Cl20]'
_cell_volume [1005.1522]
_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  4  0.0000  0.1278  0.6820  1.0
  K  K1  4  0.0000  0.1315  0.3262  1.0
  Na  Na2  4  0.0000  0.2099  0.0347  1.0
  Cu  Cu3  4  0.0000  0.4427  0.4302  1.0
  Cl  Cl4  4  0.0000  0.0416  0.0120  1.0
  Cl  Cl5  4  0.0000  0.2975  0.6751  1.0
  Cl  Cl6  4  0.0000  0.3258  0.3815  1.0
  Cl  Cl7  4  0.0000  0.3531  0.0057  1.0
  Cl  Cl8  4  0.0000  0.4978  0.2764  1.0
]