data_[Pr1Nd1Fe2Si4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pr  1.1300  1.8500  1.0600
  Nd  1.1400  1.8500  1.2765
  Fe  1.8300  1.4000  0.8525
  Si  1.9000  1.1000  0.5400
]
_symmetry_space_group_name_H-M [Pm]
_cell_length_a [4.3505]
_cell_length_b [4.0330]
_cell_length_c [8.1171]
_cell_angle_alpha [90.0000]
_cell_angle_beta [103.6324]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [6]
_chemical_formula_structural [PrNd(FeSi2)2]
_chemical_formula_sum '[Pr1 Nd1 Fe2 Si4]'
_cell_volume [138.4062]
_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
[
  Pr  Pr0  1  0.8979  0.5000  0.2951  1
  Nd  Nd1  1  0.1028  0.0000  0.7058  1
  Fe  Fe2  1  0.3815  0.0000  0.1079  1
  Fe  Fe3  1  0.6179  0.5000  0.8912  1
  Si  Si4  1  0.1747  0.5000  0.9948  1
  Si  Si5  1  0.4557  0.0000  0.4029  1
  Si  Si6  1  0.5447  0.5000  0.5985  1
  Si  Si7  1  0.8248  0.0000  0.0038  1
]