data_[Na6Al4Bi8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Al  1.6100  1.2500  0.6750
  Bi  2.0200  1.6000  1.0350
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [14.2035]
_cell_length_b [4.3944]
_cell_length_c [9.7160]
_cell_angle_alpha [90.0000]
_cell_angle_beta [113.5216]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Na3(AlBi2)2]
_chemical_formula_sum '[Na6 Al4 Bi8]'
_cell_volume [556.0417]
_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  0.1176  0.5000  0.6866  1
  Na  Na1  2  0.0000  0.0000  0.0000  1
  Al  Al2  4  0.2134  0.5000  0.3668  1
  Bi  Bi3  4  0.0906  0.0000  0.3825  1
  Bi  Bi4  4  0.1962  0.5000  0.0626  1
]