data_[Na8Ag4Pb4Br20]
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
  Pb  2.3300  1.8000  1.1225
  Br  2.9600  1.1500  0.8825
]
_symmetry_space_group_name_H-M [Cmc2_1]
_cell_length_a [4.3818]
_cell_length_b [18.3801]
_cell_length_c [15.0900]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [36]
_chemical_formula_structural [Na2AgPbBr5]
_chemical_formula_sum '[Na8 Ag4 Pb4 Br20]'
_cell_volume [1215.3106]
_cell_formula_units_Z [4]
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  0.0000  0.0559  0.6463  1
  Na  Na1  4  0.0000  0.0617  0.3822  1
  Ag  Ag2  4  0.0000  0.3894  0.4026  1
  Pb  Pb3  4  0.0000  0.2542  0.0375  1
  Br  Br4  4  0.0000  0.0814  0.0090  1
  Br  Br5  4  0.0000  0.2183  0.6706  1
  Br  Br6  4  0.0000  0.2401  0.3908  1
  Br  Br7  4  0.0000  0.4127  0.0130  1
  Br  Br8  4  0.0000  0.4916  0.2720  1
]