data_[Tb8Si4Ir8]
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
  Ir  2.2000  1.3500  0.7650
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [9.8200]
_cell_length_b [5.5407]
_cell_length_c [7.5499]
_cell_angle_alpha [90.0000]
_cell_angle_beta [102.1589]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [Tb2SiIr2]
_chemical_formula_sum '[Tb8 Si4 Ir8]'
_cell_volume [401.5774]
_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  0.1487  0.1359  0.1490  1.0
  Si  Si1  4  0.0000  0.3818  0.7500  1.0
  Ir  Ir2  8  0.1298  0.3682  0.5029  1.0
]