data_[Rb4Tl12Bi4]
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 [Pnma]
_cell_length_a [11.0900]
_cell_length_b [4.8453]
_cell_length_c [14.2914]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [62]
_chemical_formula_structural [RbTl3Bi]
_chemical_formula_sum '[Rb4 Tl12 Bi4]'
_cell_volume [767.9504]
_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  0.1906  0.2500  0.0054  1
  Tl  Tl1  4  0.0722  0.2500  0.6034  1
  Tl  Tl2  4  0.0811  0.7500  0.8030  1
  Tl  Tl3  4  0.1533  0.7500  0.2121  1
  Bi  Bi4  4  0.1236  0.2500  0.3640  1
]