data_[Al3Cr3I18]
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
  I  2.6600  1.4000  1.2733
]
_symmetry_space_group_name_H-M [R-3]
_cell_length_a [7.0624]
_cell_length_b [7.0624]
_cell_length_c [18.8068]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [148]
_chemical_formula_structural [AlCrI6]
_chemical_formula_sum '[Al3 Cr3 I18]'
_cell_volume [812.3626]
_cell_formula_units_Z [3]
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  3  -0.0000  0.0000  0.5000  1
  Cr  Cr1  3  0.0000  0.0000  0.0000  1
  I  I2  18  0.0025  0.3495  0.7497  1
]