data_[Sr1Si2Pb1]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Si  1.9000  1.1000  0.5400
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [Pm]
_cell_length_a [4.7206]
_cell_length_b [3.9453]
_cell_length_c [6.1608]
_cell_angle_alpha [90.0000]
_cell_angle_beta [111.1356]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [6]
_chemical_formula_structural [SrSi2Pb]
_chemical_formula_sum '[Sr1 Si2 Pb1]'
_cell_volume [107.0212]
_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
[
  Sr  Sr0  1  0.4694  0.0000  0.5827  1
  Si  Si1  1  0.0428  0.5000  0.7651  1
  Si  Si2  1  0.2156  0.0000  0.0177  1
  Pb  Pb3  1  0.7723  0.5000  0.1344  1
]