data_[Tb6Fe8Si8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tb  1.1000  1.7500  0.9815
  Fe  1.8300  1.4000  0.8525
  Si  1.9000  1.1000  0.5400
]
_symmetry_space_group_name_H-M [I-43m]
_cell_length_a [7.1215]
_cell_length_b [7.1215]
_cell_length_c [7.1215]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [217]
_chemical_formula_structural [Tb3(FeSi)4]
_chemical_formula_sum '[Tb6 Fe8 Si8]'
_cell_volume [361.1662]
_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  6  0.0000  0.0000  0.5000  1
  Fe  Fe1  8  0.1280  0.1280  0.1280  1
  Si  Si2  8  0.1898  0.8102  0.1898  1
]