data_Sr2LaSi
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.14
_cell_length_b   5.05
_cell_length_c   6.86
_cell_angle_alpha   90.0
_cell_angle_beta   100.49
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Sr2LaSi
_chemical_formula_sum   'Sr2 La1 Si1'
_cell_volume   141.13
_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  Sr2  1  0.34  0.52  0.47  1.0
  Sr  Sr3  1  0.55  0.52  0.28  1.0
  La  La0  1  0.38  0.0  0.37  1.0
  Si  Si1  1  0.0  0.0  0.0  1.0

data_Sr2LaSi
_symmetry_space_group_name_H-M   P1
_cell_length_a   4.14
_cell_length_b   5.05
_cell_length_c   6.86
_cell_angle_alpha   90.0
_cell_angle_beta   100.49
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Sr2LaSi
_chemical_formula_sum   'Sr2 La1 Si1'
_cell_volume   141.13
_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  0.34  0.52  0.47  1.0
  Sr  Sr1  1  0.55  0.52  0.28  1.0
  La  La2  1  0.38  0.0  0.37  1.0
  Si  Si3  1  0.0  0.0  0.0  1.0

Sr Sr La Si