data_[Rb16Hg4Pb2]
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 [Imm2]
_cell_length_a [6.4255]
_cell_length_b [22.5358]
_cell_length_c [9.0097]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [44]
_chemical_formula_structural [Rb8Hg2Pb]
_chemical_formula_sum '[Rb16 Hg4 Pb2]'
_cell_volume [1304.6460]
_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  0.0941  0.7972  1
  Rb  Rb1  4  0.0000  0.2876  0.4794  1
  Rb  Rb2  4  0.0000  0.3512  0.9589  1
  Rb  Rb3  2  0.0000  0.0000  0.3982  1
  Rb  Rb4  2  0.0000  0.5000  0.5807  1
  Hg  Hg5  4  0.0000  0.1553  0.1952  1
  Pb  Pb6  2  0.0000  0.5000  0.1620  1
]