data_[Sn8Hg8Pb20]
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 [Cmce]
_cell_length_a [17.3006]
_cell_length_b [7.9829]
_cell_length_c [8.0814]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [64]
_chemical_formula_structural [Sn2Hg2Pb5]
_chemical_formula_sum '[Sn8 Hg8 Pb20]'
_cell_volume [1116.1105]
_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
[
  Sn  Sn0  8  0.1984  0.0000  0.0000  1.0
  Hg  Hg1  8  0.0000  0.1348  0.3612  1.0
  Pb  Pb2  16  0.1425  0.1521  0.6597  1.0
  Pb  Pb3  4  0.0000  0.0000  0.0000  1.0
]