data_[Tb16Al20Si24]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tb  1.1000  1.7500  0.9815
  Al  1.6100  1.2500  0.6750
  Si  1.9000  1.1000  0.5400
]
_symmetry_space_group_name_H-M [Cmc2_1]
_cell_length_a [4.1865]
_cell_length_b [18.8912]
_cell_length_c [15.1027]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [36]
_chemical_formula_structural [Tb4Al5Si6]
_chemical_formula_sum '[Tb16 Al20 Si24]'
_cell_volume [1194.4367]
_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  0.0160  0.4995  1
  Tb  Tb1  4  0.0000  0.0382  0.7669  1
  Tb  Tb2  4  0.0000  0.1646  0.3075  1
  Tb  Tb3  4  0.0000  0.1807  0.9453  1
  Al  Al4  4  0.0000  0.1510  0.6271  1
  Al  Al5  4  0.0000  0.3054  0.6185  1
  Al  Al6  4  0.0000  0.3401  0.2795  1
  Al  Al7  4  0.0000  0.3557  0.9744  1
  Al  Al8  4  0.0000  0.4444  0.6802  1
  Si  Si9  4  0.0000  0.1098  0.1190  1
  Si  Si10  4  0.0000  0.2154  0.4886  1
  Si  Si11  4  0.0000  0.2299  0.7596  1
  Si  Si12  4  0.0000  0.4270  0.1295  1
  Si  Si13  4  0.0000  0.4283  0.4075  1
  Si  Si14  4  0.0000  0.4477  0.8525  1
]