data_[Tb12Pm20Nd8]
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 [Ibam]
_cell_length_a [9.4842]
_cell_length_b [22.0485]
_cell_length_c [6.9031]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [72]
_chemical_formula_structural [Tb3Pm5Nd2]
_chemical_formula_sum '[Tb12 Pm20 Nd8]'
_cell_volume [1443.5295]
_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  0.2483  0.1214  0.0000  1
  Tb  Tb1  4  0.0000  0.0000  0.2500  1
  Pm  Pm2  8  0.0000  0.2483  0.2500  1
  Pm  Pm3  8  0.0935  0.3733  0.0000  1
  Pm  Pm4  4  0.0000  0.5000  0.2500  1
  Nd  Nd5  8  0.0993  0.1223  0.5000  1
]