data_[Na4Cu4Ag8Cl20]
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 [3.7556]
_cell_length_b [21.0222]
_cell_length_c [11.3442]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [36]
_chemical_formula_structural [NaCuAg2Cl5]
_chemical_formula_sum '[Na4 Cu4 Ag8 Cl20]'
_cell_volume [895.6384]
_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  0.1869  0.0149  1.0
  Cu  Cu1  4  0.0000  0.4582  0.4210  1.0
  Ag  Ag2  4  0.0000  0.1282  0.3479  1.0
  Ag  Ag3  4  0.0000  0.1816  0.6765  1.0
  Cl  Cl4  4  0.0000  0.0501  0.0308  1.0
  Cl  Cl5  4  0.0000  0.3052  0.6899  1.0
  Cl  Cl6  4  0.0000  0.3241  0.0051  1.0
  Cl  Cl7  4  0.0000  0.3546  0.3335  1.0
  Cl  Cl8  4  0.0000  0.4579  0.8044  1.0
]