data_[Tb20Pm8Pr12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tb  1.1000  1.7500  0.9815
  Pm  1.1300  1.8500  1.1100
  Pr  1.1300  1.8500  1.0600
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [10.8034]
_cell_length_b [16.5964]
_cell_length_c [9.3402]
_cell_angle_alpha [90.0000]
_cell_angle_beta [125.3165]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [Tb5Pm2Pr3]
_chemical_formula_sum '[Tb20 Pm8 Pr12]'
_cell_volume [1366.4726]
_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
[
  Tb  Tb0  8  0.2450  0.1159  0.7384  1
  Tb  Tb1  4  0.0000  0.0292  0.2500  1
  Tb  Tb2  4  0.0000  0.2257  0.2500  1
  Tb  Tb3  4  0.0000  0.4737  0.7500  1
  Pr  Pr4  8  0.1463  0.3757  0.5458  1
  Pm  Pm5  8  0.1479  0.1200  0.0429  1
  Pr  Pr6  4  0.0000  0.2698  0.7500  1
]