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 [10.9604]
_cell_length_b [4.9723]
_cell_length_c [14.2557]
_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 [776.9008]
_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  0.1928  0.2500  0.9947  1.0
  Tl  Tl1  4  0.0718  0.2500  0.3958  1.0
  Tl  Tl2  4  0.0812  0.7500  0.1980  1.0
  Tl  Tl3  4  0.1539  0.7500  0.7865  1.0
  Bi  Bi4  4  0.1244  0.2500  0.6360  1.0
]