data_[Tb2Si4Ni20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tb  1.1000  1.7500  0.9815
  Si  1.9000  1.1000  0.5400
  Ni  1.9100  1.3500  0.7400
]
_symmetry_space_group_name_H-M [Immm]
_cell_length_a [4.7388]
_cell_length_b [8.0886]
_cell_length_c [8.3966]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [71]
_chemical_formula_structural [Tb(SiNi5)2]
_chemical_formula_sum '[Tb2 Si4 Ni20]'
_cell_volume [321.8420]
_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  2  0.0000  0.0000  0.0000  1
  Si  Si1  4  0.0000  0.0000  0.3449  1
  Ni  Ni2  8  0.2500  0.2500  0.2500  1
  Ni  Ni3  4  0.0000  0.2443  0.5000  1
  Ni  Ni4  4  0.0000  0.3499  0.0000  1
  Ni  Ni5  4  0.0000  0.5000  0.2737  1
]