data_[Tb8Pm20Nd4]
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
  Nd  1.1400  1.8500  1.2765
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [16.8081]
_cell_length_b [10.0751]
_cell_length_c [6.5590]
_cell_angle_alpha [90.0000]
_cell_angle_beta [98.9367]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [Tb2Pm5Nd]
_chemical_formula_sum '[Tb8 Pm20 Nd4]'
_cell_volume [1097.2316]
_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  0.0775  0.2545  0.1242  1
  Pm  Pm1  8  0.0961  0.4068  0.6408  1
  Pm  Pm2  8  0.2001  0.0883  0.5186  1
  Pm  Pm3  4  0.0000  0.0552  0.7500  1
  Nd  Nd4  4  0.2500  0.2500  0.0000  1
]