data_[Ba6Hg16Pb6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ba  0.8900  2.1500  1.4900
  Hg  2.0000  1.5000  1.2450
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [Immm]
_cell_length_a [5.1995]
_cell_length_b [10.8563]
_cell_length_c [15.5852]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [71]
_chemical_formula_structural [Ba3Hg8Pb3]
_chemical_formula_sum '[Ba6 Hg16 Pb6]'
_cell_volume [879.7348]
_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
[
  Ba  Ba0  4  0.0000  0.0000  0.1994  1.0
  Ba  Ba1  2  0.0000  0.0000  0.5000  1.0
  Hg  Hg2  8  0.0000  0.2780  0.3541  1.0
  Hg  Hg3  8  0.0000  0.3663  0.1634  1.0
  Pb  Pb4  4  0.0000  0.2082  0.0000  1.0
  Pb  Pb5  2  0.0000  0.5000  0.5000  1.0
]