data_[Tb8Pm8Pr6]
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 [Immm]
_cell_length_a [3.6408]
_cell_length_b [9.5284]
_cell_length_c [22.2258]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [71]
_chemical_formula_structural [Tb4Pm4Pr3]
_chemical_formula_sum '[Tb8 Pm8 Pr6]'
_cell_volume [771.0428]
_cell_formula_units_Z [2]
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  4  0.0000  0.3174  0.5000  1
  Tb  Tb1  4  0.0000  0.5000  0.2586  1
  Pm  Pm2  8  0.0000  0.1775  0.3539  1
  Pr  Pr3  4  0.0000  0.0000  0.1090  1
  Pr  Pr4  2  0.0000  0.5000  0.0000  1
]