data_[Rb4Hg2Bi2]
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 [Imm2]
_cell_length_a [5.2046]
_cell_length_b [11.0614]
_cell_length_c [7.0165]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [44]
_chemical_formula_structural [Rb2HgBi]
_chemical_formula_sum '[Rb4 Hg2 Bi2]'
_cell_volume [403.9395]
_cell_formula_units_Z [2]
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  0.3119  0.0749  1
  Hg  Hg1  2  0.0000  0.5000  0.5650  1
  Bi  Bi2  2  0.0000  0.0000  0.2849  1
]