data_[Ca3Cd6I3O18]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ca  1.0000  1.8000  1.1400
  Cd  1.6900  1.5500  1.0900
  I  2.6600  1.4000  1.2733
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [R3]
_cell_length_a [5.7356]
_cell_length_b [5.7356]
_cell_length_c [14.9649]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [146]
_chemical_formula_structural [CaCd2IO6]
_chemical_formula_sum '[Ca3 Cd6 I3 O18]'
_cell_volume [426.3523]
_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
[
  Ca  Ca0  3  0.0000  0.0000  0.8098  1
  Cd  Cd1  3  0.0000  0.0000  0.0274  1
  Cd  Cd2  3  0.0000  0.0000  0.5396  1
  I  I3  3  0.0000  0.0000  0.3210  1
  O  O4  9  0.0145  0.7359  0.4042  1
  O  O5  9  0.0473  0.3401  0.9170  1
]