data_[Al4Cr4Si4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Al  1.6100  1.2500  0.6750
  Cr  1.6600  1.4000  0.9400
  Si  1.9000  1.1000  0.5400
]
_symmetry_space_group_name_H-M [Pnma]
_cell_length_a [6.1068]
_cell_length_b [3.1348]
_cell_length_c [8.0997]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [62]
_chemical_formula_structural [AlCrSi]
_chemical_formula_sum '[Al4 Cr4 Si4]'
_cell_volume [155.0573]
_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
[
  Al  Al0  4  0.1299  0.2500  0.0837  1.0
  Cr  Cr1  4  0.1236  0.2500  0.7455  1.0
  Si  Si2  4  0.1242  0.2500  0.4031  1.0
]