data_SiSn2Pb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.69
_cell_length_b   5.69
_cell_length_c   3.41
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   108.96
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SiSn2Pb
_chemical_formula_sum   'Si1 Sn2 Pb1'
_cell_volume   104.52
_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  Si1  1  0.0  0.0  0.0  1.0
  Sn  Sn2  1  0.65  0.32  0.71  1.0
  Sn  Sn3  1  0.65  0.68  0.71  1.0
  Pb  Pb0  1  0.31  0.0  0.0  1.0

data_SiSn2Pb
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.41
_cell_length_b   5.69
_cell_length_c   5.69
_cell_angle_alpha   108.96
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SiSn2Pb
_chemical_formula_sum   'Si1 Sn2 Pb1'
_cell_volume   104.52
_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
  Sn  Sn1  1  0.71  0.65  0.32  1.0
  Sn  Sn2  1  0.71  0.65  0.68  1.0
  Pb  Pb3  1  -0.0  0.31  0.0  1.0

Si Sn Sn Pb