data_[Na2Cu2Ag2Cl8]
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 [P2_1/m]
_cell_length_a [6.7482]
_cell_length_b [7.0738]
_cell_length_c [7.3932]
_cell_angle_alpha [90.0000]
_cell_angle_beta [105.6984]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [NaCuAgCl4]
_chemical_formula_sum '[Na2 Cu2 Ag2 Cl8]'
_cell_volume [339.7491]
_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
[
  Na  Na0  2  0.2081  0.2500  0.0473  1.0
  Cu  Cu1  2  0.2631  0.7500  0.3255  1.0
  Ag  Ag2  2  0.2189  0.2500  0.5446  1.0
  Cl  Cl3  4  0.0248  0.5083  0.2622  1.0
  Cl  Cl4  2  0.4712  0.7500  0.6198  1.0
  Cl  Cl5  2  0.4844  0.7500  0.1427  1.0
]