data_[Pm16Hf16Si16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Hf  1.3000  1.5500  0.8500
  Si  1.9000  1.1000  0.5400
]
_symmetry_space_group_name_H-M [Fddd]
_cell_length_a [9.1365]
_cell_length_b [9.6164]
_cell_length_c [13.2524]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [70]
_chemical_formula_structural [PmHfSi]
_chemical_formula_sum '[Pm16 Hf16 Si16]'
_cell_volume [1164.3502]
_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
[
  Pm  Pm0  16  0.0000  0.0000  0.1181  1
  Hf  Hf1  16  0.0000  0.0000  0.3746  1
  Si  Si2  16  0.0000  0.2256  0.5000  1
]