data_[Tb8Pm8Nd28]
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 [16.1954]
_cell_length_b [6.3912]
_cell_length_c [15.8945]
_cell_angle_alpha [90.0000]
_cell_angle_beta [111.3999]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [Tb2Pm2Nd7]
_chemical_formula_sum '[Tb8 Pm8 Nd28]'
_cell_volume [1531.7885]
_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  0.2275  0.1663  0.2952  1
  Pm  Pm1  8  0.1378  0.8333  0.9777  1
  Nd  Nd2  8  0.0470  0.1658  0.6593  1
  Nd  Nd3  8  0.0922  0.3342  0.0692  1
  Nd  Nd4  8  0.1824  0.3344  0.8855  1
  Nd  Nd5  4  0.0000  0.3317  0.2500  1
]