data_[Rb8Hg4Pb8]
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
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [11.0495]
_cell_length_b [7.2237]
_cell_length_c [10.6339]
_cell_angle_alpha [90.0000]
_cell_angle_beta [93.7816]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [Rb2HgPb2]
_chemical_formula_sum '[Rb8 Hg4 Pb8]'
_cell_volume [846.9240]
_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  8  0.1590  0.3639  0.1708  1
  Hg  Hg1  4  0.0000  0.1491  0.7500  1
  Pb  Pb2  8  0.1199  0.1384  0.5105  1
]