data_[Na2Ag4Br6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Ag  1.9300  1.6000  1.0867
  Br  2.9600  1.1500  0.8825
]
_symmetry_space_group_name_H-M [Cm]
_cell_length_a [7.6088]
_cell_length_b [11.2502]
_cell_length_c [17.5677]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [8]
_chemical_formula_structural [NaAg2Br3]
_chemical_formula_sum '[Na2 Ag4 Br6]'
_cell_volume [1503.8197]
_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  0.3200  0.5000  0.5173  1
  Ag  Ag1  4  0.3389  0.1306  0.4880  1
  Br  Br2  4  0.0475  0.1913  0.5509  1
  Br  Br3  2  0.0454  0.5000  0.4048  1
]