data_[Rb4Hg4Bi8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Hg  2.0000  1.5000  1.2450
  Bi  2.0200  1.6000  1.0350
]
_symmetry_space_group_name_H-M [Pnma]
_cell_length_a [9.1645]
_cell_length_b [5.7951]
_cell_length_c [10.8613]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [62]
_chemical_formula_structural [RbHgBi2]
_chemical_formula_sum '[Rb4 Hg4 Bi8]'
_cell_volume [576.8407]
_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  0.1589  0.2500  0.2066  1
  Hg  Hg1  4  0.1553  0.7500  0.9974  1
  Bi  Bi2  4  0.0193  0.2500  0.5794  1
  Bi  Bi3  4  0.1333  0.2500  0.8504  1
]