data_[Rb4Tl40Bi8]
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 [Fmmm]
_cell_length_a [6.4809]
_cell_length_b [16.4972]
_cell_length_c [16.6727]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [69]
_chemical_formula_structural [Rb(Tl5Bi)2]
_chemical_formula_sum '[Rb4 Tl40 Bi8]'
_cell_volume [1782.5830]
_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  0.0000  0.0000  0.0000  1
  Tl  Tl1  16  0.0000  0.1064  0.3963  1
  Tl  Tl2  16  0.0000  0.1791  0.1799  1
  Tl  Tl3  8  0.2500  0.0000  0.2500  1
  Bi  Bi4  8  0.2500  0.2500  0.0000  1
]