data_[Cd4Hg4I2]
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
  I  2.6600  1.4000  1.2733
]
_symmetry_space_group_name_H-M [P4/mbm]
_cell_length_a [8.3515]
_cell_length_b [8.3515]
_cell_length_c [4.1442]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [127]
_chemical_formula_structural [Cd2Hg2I]
_chemical_formula_sum '[Cd4 Hg4 I2]'
_cell_volume [289.0533]
_cell_formula_units_Z [2]
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  4  0.1255  0.3745  0.0000  1
  Hg  Hg1  4  0.1797  0.6797  0.5000  1
  I  I2  2  0.0000  0.0000  0.0000  1
]