data_[Na4Bi2Br10]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Bi  2.0200  1.6000  1.0350
  Br  2.9600  1.1500  0.8825
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [13.9790]
_cell_length_b [5.9002]
_cell_length_c [9.1787]
_cell_angle_alpha [90.0000]
_cell_angle_beta [129.4767]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Na2BiBr5]
_chemical_formula_sum '[Na4 Bi2 Br10]'
_cell_volume [584.3492]
_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  0.1953  0.5000  0.7762  1
  Bi  Bi1  2  0.0000  0.5000  0.0000  1
  Br  Br2  4  0.0599  0.5000  0.3589  1
  Br  Br3  4  0.2426  0.0000  0.8342  1
  Br  Br4  2  0.0000  0.0000  0.0000  1
]