data_[Ce2Hg2I2O2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ce  1.1200  1.8500  1.0800
  Hg  2.0000  1.5000  1.2450
  I  2.6600  1.4000  1.2733
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P4/nmm]
_cell_length_a [4.1503]
_cell_length_b [4.1503]
_cell_length_c [13.0250]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [129]
_chemical_formula_structural [CeHgIO]
_chemical_formula_sum '[Ce2 Hg2 I2 O2]'
_cell_volume [224.3523]
_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
[
  Ce  Ce0  2  0.0000  0.5000  0.9080  1.0
  Hg  Hg1  2  0.0000  0.0000  0.5000  1.0
  I  I2  2  0.0000  0.5000  0.2323  1.0
  O  O3  2  0.0000  0.0000  0.0000  1.0
]