data_[Hg2As4Pb2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Hg  2.0000  1.5000  1.2450
  As  2.1800  1.1500  0.6600
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [Cm]
_cell_length_a [12.0189]
_cell_length_b [3.5585]
_cell_length_c [5.6120]
_cell_angle_alpha [90.0000]
_cell_angle_beta [104.5153]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [8]
_chemical_formula_structural [HgAs2Pb]
_chemical_formula_sum '[Hg2 As4 Pb2]'
_cell_volume [232.3591]
_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
[
  Hg  Hg0  2  0.0298  0.5000  0.4168  1
  As  As1  2  0.2700  0.0000  0.8429  1
  As  As2  2  0.4173  0.5000  0.8833  1
  Pb  Pb3  2  0.2829  0.5000  0.3570  1
]