data_[Rb8Tl8Bi4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Tl  1.6200  1.9000  1.3325
  Bi  2.0200  1.6000  1.0350
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [12.7989]
_cell_length_b [8.1177]
_cell_length_c [8.7983]
_cell_angle_alpha [90.0000]
_cell_angle_beta [109.0960]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [Rb2Tl2Bi]
_chemical_formula_sum '[Rb8 Tl8 Bi4]'
_cell_volume [863.8090]
_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  0.1740  0.4227  0.1491  1
  Tl  Tl1  8  0.0882  0.1263  0.4453  1
  Bi  Bi2  4  0.0000  0.2135  0.7500  1
]