data_[Al6Cr6H18]
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
  H  2.2000  0.2500  0.0000
]
_symmetry_space_group_name_H-M [R-3m]
_cell_length_a [4.3865]
_cell_length_b [4.3865]
_cell_length_c [12.6642]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [166]
_chemical_formula_structural [AlCrH3]
_chemical_formula_sum '[Al6 Cr6 H18]'
_cell_volume [211.0296]
_cell_formula_units_Z [6]
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  6  0.0000  0.0000  0.1044  1.0
  Cr  Cr1  6  0.0000  0.0000  0.3082  1.0
  H  H2  18  0.0283  0.5142  0.0960  1.0
]