data_[Na8Cu4Ag4Cl20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Cu  1.9000  1.3500  0.8200
  Ag  1.9300  1.6000  1.0867
  Cl  3.1600  1.0000  0.7800
]
_symmetry_space_group_name_H-M [Cmc2_1]
_cell_length_a [3.8441]
_cell_length_b [18.6011]
_cell_length_c [12.2058]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [36]
_chemical_formula_structural [Na2CuAgCl5]
_chemical_formula_sum '[Na8 Cu4 Ag4 Cl20]'
_cell_volume [872.7634]
_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
[
  Na  Na0  4  0.0000  0.0814  0.6389  1.0
  Na  Na1  4  0.0000  0.1196  0.3303  1.0
  Cu  Cu2  4  0.0000  0.4271  0.4186  1.0
  Ag  Ag3  4  0.0000  0.2180  0.0544  1.0
  Cl  Cl4  4  0.0000  0.0424  0.0092  1.0
  Cl  Cl5  4  0.0000  0.2942  0.6973  1.0
  Cl  Cl6  4  0.0000  0.3064  0.4078  1.0
  Cl  Cl7  4  0.0000  0.3625  0.0029  1.0
  Cl  Cl8  4  0.0000  0.4968  0.2646  1.0
]