data_[Y4Fe4Si4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Y  1.2200  1.8000  1.0400
  Fe  1.8300  1.4000  0.8525
  Si  1.9000  1.1000  0.5400
]
_symmetry_space_group_name_H-M [P6_3/mmc]
_cell_length_a [4.0118]
_cell_length_b [4.0118]
_cell_length_c [15.7008]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [194]
_chemical_formula_structural [YFeSi]
_chemical_formula_sum '[Y4 Fe4 Si4]'
_cell_volume [218.8407]
_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
[
  Y  Y0  2  0.0000  0.0000  0.0000  1
  Y  Y1  2  0.0000  0.0000  0.2500  1
  Fe  Fe2  4  0.3333  0.6667  0.1293  1
  Si  Si3  4  0.3333  0.6667  0.8766  1
]