data_[Tb4Nd28]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tb  1.1000  1.7500  0.9815
  Nd  1.1400  1.8500  1.2765
]
_symmetry_space_group_name_H-M [Fm-3m]
_cell_length_a [10.3806]
_cell_length_b [10.3806]
_cell_length_c [10.3806]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [225]
_chemical_formula_structural [TbNd7]
_chemical_formula_sum '[Tb4 Nd28]'
_cell_volume [1118.5966]
_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  4  0.0000  0.0000  0.0000  1.0
  Nd  Nd1  24  0.0000  0.2500  0.2500  1.0
  Nd  Nd2  4  0.0000  0.0000  0.5000  1.0
]