data_[Pr4Nd20Sm4Er8]
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
  Sm  1.1700  1.8500  1.2290
  Er  1.2400  1.7500  1.0300
]
_symmetry_space_group_name_H-M [Cmc2_1]
_cell_length_a [5.7340]
_cell_length_b [20.5894]
_cell_length_c [10.6275]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [36]
_chemical_formula_structural [PrNd5SmEr2]
_chemical_formula_sum '[Pr4 Nd20 Sm4 Er8]'
_cell_volume [1254.6871]
_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  0.4127  0.5519  1
  Nd  Nd1  4  0.0000  0.0164  0.9777  1
  Nd  Nd2  4  0.0000  0.2794  0.6875  1
  Nd  Nd3  4  0.0000  0.2967  0.2933  1
  Nd  Nd4  4  0.0000  0.3901  0.9736  1
  Nd  Nd5  4  0.0000  0.4768  0.2595  1
  Sm  Sm6  4  0.0000  0.1992  0.9881  1
  Er  Er7  4  0.0000  0.1137  0.2672  1
  Er  Er8  4  0.0000  0.1169  0.6772  1
]