data_[Rb4Hg12Pb4]
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/m]
_cell_length_a [10.7499]
_cell_length_b [7.6761]
_cell_length_c [8.4346]
_cell_angle_alpha [90.0000]
_cell_angle_beta [92.9503]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [RbHg3Pb]
_chemical_formula_sum '[Rb4 Hg12 Pb4]'
_cell_volume [695.0853]
_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  0.2443  0.5000  0.7377  1.0
  Hg  Hg1  4  0.0000  0.2148  0.5000  1.0
  Hg  Hg2  4  0.0000  0.2871  0.0000  1.0
  Hg  Hg3  4  0.1114  0.5000  0.2934  1.0
  Pb  Pb4  4  0.1176  0.0000  0.7929  1.0
]