data_[Sn1Hg1Pb2Cl8]
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
  Cl  3.1600  1.0000  0.7800
]
_symmetry_space_group_name_H-M [P2/m]
_cell_length_a [6.4954]
_cell_length_b [8.6469]
_cell_length_c [6.7865]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.3626]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [10]
_chemical_formula_structural [SnHg(PbCl4)2]
_chemical_formula_sum '[Sn1 Hg1 Pb2 Cl8]'
_cell_volume [381.1582]
_cell_formula_units_Z [1]
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  1  0.0000  0.5000  0.0000  1.0
  Hg  Hg1  1  0.0000  0.0000  0.0000  1.0
  Pb  Pb2  2  0.5000  0.2436  0.5000  1.0
  Cl  Cl3  4  0.2228  0.2376  0.1572  1.0
  Cl  Cl4  2  0.2548  0.0000  0.6729  1.0
  Cl  Cl5  2  0.2652  0.5000  0.6676  1.0
]