data_[Tb16Pm6Nd8]
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/m]
_cell_length_a [13.5490]
_cell_length_b [12.9095]
_cell_length_c [6.8394]
_cell_angle_alpha [90.0000]
_cell_angle_beta [120.2699]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Tb8Pm3Nd4]
_chemical_formula_sum '[Tb16 Pm6 Nd8]'
_cell_volume [1033.1865]
_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  0.2569  0.5000  1
  Tb  Tb1  4  0.0000  0.3593  0.0000  1
  Tb  Tb2  4  0.2313  0.5000  0.4676  1
  Tb  Tb3  4  0.2326  0.5000  0.9921  1
  Pm  Pm4  4  0.2500  0.2500  0.0000  1
  Pm  Pm5  2  0.0000  0.5000  0.5000  1
  Nd  Nd6  4  0.2500  0.2500  0.5000  1
  Nd  Nd7  2  0.0000  0.0000  0.0000  1
  Nd  Nd8  2  0.0000  0.0000  0.5000  1
]