data_[Pr2Sm2Si4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pr  1.1300  1.8500  1.0600
  Sm  1.1700  1.8500  1.2290
  Si  1.9000  1.1000  0.5400
]
_symmetry_space_group_name_H-M [Pmc2_1]
_cell_length_a [3.9553]
_cell_length_b [5.8961]
_cell_length_c [8.2154]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [26]
_chemical_formula_structural [PrSmSi2]
_chemical_formula_sum '[Pr2 Sm2 Si4]'
_cell_volume [191.5916]
_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
[
  Pr  Pr0  2  0.0000  0.1351  0.6796  1.0
  Sm  Sm1  2  0.5000  0.3637  0.3197  1.0
  Si  Si2  2  0.0000  0.3755  0.0354  1.0
  Si  Si3  2  0.5000  0.1324  0.9652  1.0
]