data_[Hf16Si16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Hf  1.3000  1.5500  0.8500
  Si  1.9000  1.1000  0.5400
]
_symmetry_space_group_name_H-M [Fddd]
_cell_length_a [6.5754]
_cell_length_b [8.2483]
_cell_length_c [10.8599]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [70]
_chemical_formula_structural [HfSi]
_chemical_formula_sum '[Hf16 Si16]'
_cell_volume [588.9934]
_cell_formula_units_Z [16]
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
[
  Hf  Hf0  16  0.0000  0.2051  0.0000  1
  Si  Si1  16  0.0627  0.2500  0.7500  1
]