data_[Rb8Na4Bi8]
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/c]
_cell_length_a [11.4465]
_cell_length_b [7.3290]
_cell_length_c [10.5672]
_cell_angle_alpha [90.0000]
_cell_angle_beta [99.7238]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [Rb2NaBi2]
_chemical_formula_sum '[Rb8 Na4 Bi8]'
_cell_volume [873.7633]
_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  8  0.1544  0.3658  0.1571  1.0
  Na  Na1  4  0.0000  0.0818  0.7500  1.0
  Bi  Bi2  8  0.1322  0.1395  0.5074  1.0
]