data_[K4Na2Bi2Br12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  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 [P2_1/c]
_cell_length_a [7.7571]
_cell_length_b [8.1922]
_cell_length_c [13.5343]
_cell_angle_alpha [90.0000]
_cell_angle_beta [124.4611]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [14]
_chemical_formula_structural [K2NaBiBr6]
_chemical_formula_sum '[K4 Na2 Bi2 Br12]'
_cell_volume [709.1371]
_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
[
  K  K0  4  0.2813  0.0805  0.2530  1.0
  Na  Na1  2  0.5000  0.0000  0.0000  1.0
  Bi  Bi2  2  0.0000  0.0000  0.5000  1.0
  Br  Br3  4  0.1303  0.0349  0.7455  1.0
  Br  Br4  4  0.2445  0.7043  0.5594  1.0
  Br  Br5  4  0.3580  0.1913  0.5562  1.0
]