data_[Pr4Nd20Y4Er8]
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
  Y  1.2200  1.8000  1.0400
  Er  1.2400  1.7500  1.0300
]
_symmetry_space_group_name_H-M [Cmc2_1]
_cell_length_a [5.6797]
_cell_length_b [20.5164]
_cell_length_c [10.7841]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [36]
_chemical_formula_structural [PrNd5YEr2]
_chemical_formula_sum '[Pr4 Nd20 Y4 Er8]'
_cell_volume [1256.6338]
_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  0.2025  0.0094  1
  Nd  Nd1  4  0.0000  0.0157  0.0222  1
  Nd  Nd2  4  0.0000  0.2806  0.3080  1
  Nd  Nd3  4  0.0000  0.2963  0.7038  1
  Nd  Nd4  4  0.0000  0.3919  0.0258  1
  Nd  Nd5  4  0.0000  0.4794  0.7429  1
  Y  Y6  4  0.0000  0.4098  0.4575  1
  Er  Er7  4  0.0000  0.1104  0.7385  1
  Er  Er8  4  0.0000  0.1162  0.3159  1
]