data_[Na2Cu2Ag2Br6]
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 [P2_1/m]
_cell_length_a [8.4130]
_cell_length_b [4.0896]
_cell_length_c [9.4573]
_cell_angle_alpha [90.0000]
_cell_angle_beta [101.4825]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [NaCuAgBr3]
_chemical_formula_sum '[Na2 Cu2 Ag2 Br6]'
_cell_volume [318.8725]
_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  0.1759  0.2500  0.1842  1.0
  Cu  Cu1  2  0.0662  0.2500  0.5705  1.0
  Ag  Ag2  2  0.3473  0.7500  0.8586  1.0
  Br  Br3  2  0.0871  0.2500  0.8419  1.0
  Br  Br4  2  0.2303  0.7500  0.5304  1.0
  Br  Br5  2  0.4198  0.7500  0.1638  1.0
]