data_[Rb8Na8Bi4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  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 [13.6815]
_cell_length_b [5.7432]
_cell_length_c [13.5903]
_cell_angle_alpha [90.0000]
_cell_angle_beta [106.3967]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Rb2Na2Bi]
_chemical_formula_sum '[Rb8 Na8 Bi4]'
_cell_volume [1024.4394]
_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
[
  Rb  Rb0  4  0.0390  0.5000  0.3435  1.0
  Rb  Rb1  4  0.2174  0.0000  0.8437  1.0
  Na  Na2  4  0.0791  0.0000  0.1222  1.0
  Na  Na3  4  0.1912  0.0000  0.5469  1.0
  Bi  Bi4  4  0.2472  0.5000  0.6678  1.0
]