data_[Si2Sb2Pb4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Si  1.9000  1.1000  0.5400
  Sb  2.0500  1.4500  0.8300
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [Cm]
_cell_length_a [11.7991]
_cell_length_b [3.8391]
_cell_length_c [5.4649]
_cell_angle_alpha [90.0000]
_cell_angle_beta [117.2420]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [8]
_chemical_formula_structural [SiSbPb2]
_chemical_formula_sum '[Si2 Sb2 Pb4]'
_cell_volume [220.0910]
_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
[
  Si  Si0  2  0.2658  0.5000  0.2520  1
  Sb  Sb1  2  0.4457  0.0000  0.4500  1
  Pb  Pb2  2  0.0370  0.0000  0.0472  1
  Pb  Pb3  2  0.2514  0.0000  0.7508  1
]