data_[Na6Cu2Ag6Br16]
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
  Br  2.9600  1.1500  0.8825
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [14.5071]
_cell_length_b [8.3558]
_cell_length_c [8.0908]
_cell_angle_alpha [90.0000]
_cell_angle_beta [122.8032]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Na3CuAg3Br8]
_chemical_formula_sum '[Na6 Cu2 Ag6 Br16]'
_cell_volume [824.3682]
_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  4  0.2500  0.2500  0.0000  1.0
  Na  Na1  2  0.0000  0.5000  0.5000  1.0
  Cu  Cu2  2  0.0000  0.0000  0.5000  1.0
  Ag  Ag3  4  0.2500  0.2500  0.5000  1.0
  Ag  Ag4  2  0.0000  0.0000  0.0000  1.0
  Br  Br5  8  0.0012  0.2085  0.7193  1.0
  Br  Br6  4  0.2375  0.5000  0.2564  1.0
  Br  Br7  4  0.2493  0.5000  0.7475  1.0
]