data_[K4Na4Bi6]
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
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [13.1942]
_cell_length_b [5.3417]
_cell_length_c [8.4716]
_cell_angle_alpha [90.0000]
_cell_angle_beta [118.8935]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [K2Na2Bi3]
_chemical_formula_sum '[K4 Na4 Bi6]'
_cell_volume [522.7548]
_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  0.1504  0.0000  0.7744  1.0
  Na  Na1  4  0.1336  0.0000  0.2538  1.0
  Bi  Bi2  4  0.0920  0.5000  0.4417  1.0
  Bi  Bi3  2  0.0000  0.5000  0.0000  1.0
]