data_[Cu8Ag8Cl20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  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 [Ima2]
_cell_length_a [17.3436]
_cell_length_b [6.6070]
_cell_length_c [6.8616]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [46]
_chemical_formula_structural [Cu2Ag2Cl5]
_chemical_formula_sum '[Cu8 Ag8 Cl20]'
_cell_volume [786.2710]
_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
[
  Cu  Cu0  4  0.0000  0.0000  0.9783  1
  Cu  Cu1  4  0.2500  0.5442  0.5433  1
  Ag  Ag2  8  0.1193  0.0001  0.5349  1
  Cl  Cl3  8  0.0348  0.7467  0.7261  1
  Cl  Cl4  8  0.1402  0.1215  0.9579  1
  Cl  Cl5  4  0.2500  0.6385  0.8765  1
]