data_[Al3Cr3Bi6O18]
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
  Bi  2.0200  1.6000  1.0350
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [R3]
_cell_length_a [5.5082]
_cell_length_b [5.5082]
_cell_length_c [13.6269]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [146]
_chemical_formula_structural [AlCr(BiO3)2]
_chemical_formula_sum '[Al3 Cr3 Bi6 O18]'
_cell_volume [358.0505]
_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  0.3141  1.0
  Cr  Cr1  3  0.0000  0.0000  0.8155  1.0
  Bi  Bi2  3  0.0000  0.0000  0.0397  1.0
  Bi  Bi3  3  0.0000  0.0000  0.5386  1.0
  O  O4  9  0.0050  0.4423  0.5773  1.0
  O  O5  9  0.0216  0.5734  0.0740  1.0
]