data_SiSbPb2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.33
_cell_length_b   7.33
_cell_length_c   7.33
_cell_angle_alpha   150.33
_cell_angle_beta   144.42
_cell_angle_gamma   46.99
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SiSbPb2
_chemical_formula_sum   'Si1 Sb1 Pb2'
_cell_volume   112.99
_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
  Si  Si3  1  0.0  0.0  0.0  1.0
  Sb  Sb2  1  0.0  0.0  0.72  1.0
  Pb  Pb0  1  0.88  0.0  0.44  1.0
  Pb  Pb1  1  0.0  0.24  0.28  1.0

data_SiSbPb2
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.75
_cell_length_b   4.48
_cell_length_c   7.33
_cell_angle_alpha   107.79
_cell_angle_beta   104.84
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SiSbPb2
_chemical_formula_sum   'Si1 Sb1 Pb2'
_cell_volume   112.99
_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
  Si  Si0  1  0.0  0.0  0.0  1.0
  Sb  Sb1  1  0.28  0.28  0.28  1.0
  Pb  Pb2  1  0.44  0.56  0.44  1.0
  Pb  Pb3  1  0.72  0.96  0.96  1.0

Si Sb Pb Pb