data_[Sn2Hg6Pb6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sn  1.9600  1.4500  0.8300
  Hg  2.0000  1.5000  1.2450
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [P6_3/m]
_cell_length_a [8.9730]
_cell_length_b [8.9730]
_cell_length_c [5.8112]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [176]
_chemical_formula_structural [Sn(HgPb)3]
_chemical_formula_sum '[Sn2 Hg6 Pb6]'
_cell_volume [405.2072]
_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
[
  Sn  Sn0  2  0.3333  0.6667  0.7500  1.0
  Hg  Hg1  6  0.0444  0.8176  0.7500  1.0
  Pb  Pb2  6  0.0890  0.6258  0.2500  1.0
]