data_[Tb18Pm36Nd3]
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 [R-3]
_cell_length_a [12.1512]
_cell_length_b [12.1512]
_cell_length_c [15.2890]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [148]
_chemical_formula_structural [Tb6Pm12Nd]
_chemical_formula_sum '[Tb18 Pm36 Nd3]'
_cell_volume [1955.0060]
_cell_formula_units_Z [3]
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  18  0.0129  0.5875  0.6850  1
  Pm  Pm1  18  0.0062  0.1753  0.1918  1
  Pm  Pm2  18  0.0461  0.1958  0.4167  1
  Nd  Nd3  3  0.0000  0.0000  0.0000  1
]