data_[Na2Cu2Ag1Br6]
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 [P-3]
_cell_length_a [7.2559]
_cell_length_b [7.2559]
_cell_length_c [7.1603]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [147]
_chemical_formula_structural [Na2Cu2AgBr6]
_chemical_formula_sum '[Na2 Cu2 Ag1 Br6]'
_cell_volume [326.4693]
_cell_formula_units_Z [1]
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  0.3333  0.6667  0.6024  1.0
  Cu  Cu1  2  0.3333  0.6667  0.1800  1.0
  Ag  Ag2  1  0.0000  0.0000  0.0000  1.0
  Br  Br3  6  0.0321  0.6985  0.2345  1.0
]