data_[Cd3Hg6Ir3O18]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Cd  1.6900  1.5500  1.0900
  Hg  2.0000  1.5000  1.2450
  Ir  2.2000  1.3500  0.7650
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [R-3]
_cell_length_a [5.7696]
_cell_length_b [5.7696]
_cell_length_c [14.0812]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [148]
_chemical_formula_structural [CdHg2IrO6]
_chemical_formula_sum '[Cd3 Hg6 Ir3 O18]'
_cell_volume [405.9468]
_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
[
  Cd  Cd0  3  -0.0000  0.0000  0.5000  1.0
  Hg  Hg1  6  0.0000  0.0000  0.2517  1.0
  Ir  Ir2  3  0.0000  0.0000  0.0000  1.0
  O  O3  18  0.0353  0.7436  0.0794  1.0
]