data_[Pr20Er8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pr  1.1300  1.8500  1.0600
  Er  1.2400  1.7500  1.0300
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [16.2611]
_cell_length_b [6.4145]
_cell_length_c [9.4329]
_cell_angle_alpha [90.0000]
_cell_angle_beta [95.4697]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [Pr5Er2]
_chemical_formula_sum '[Pr20 Er8]'
_cell_volume [979.4332]
_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  8  0.1390  0.1708  0.4633  1.0
  Pr  Pr1  8  0.2157  0.3352  0.8220  1.0
  Pr  Pr2  4  0.0000  0.1725  0.7500  1.0
  Er  Er3  8  0.0701  0.3355  0.1080  1.0
]