data_[Pm4Pr12Si12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Pr  1.1300  1.8500  1.0600
  Si  1.9000  1.1000  0.5400
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [8.3340]
_cell_length_b [12.8438]
_cell_length_c [7.7123]
_cell_angle_alpha [90.0000]
_cell_angle_beta [92.3284]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Pm(PrSi)3]
_chemical_formula_sum '[Pm4 Pr12 Si12]'
_cell_volume [824.8480]
_cell_formula_units_Z [4]
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  4  0.0000  0.1661  0.5000  1
  Pr  Pr1  4  0.0000  0.2258  0.0000  1
  Pr  Pr2  4  0.1305  0.5000  0.3695  1
  Pm  Pm3  4  0.2473  0.5000  0.9100  1
  Si  Si4  8  0.1714  0.3292  0.6991  1
  Si  Si5  4  0.0575  0.0000  0.7751  1
]