data_[Ce6Cd2Hg8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ce  1.1200  1.8500  1.0800
  Cd  1.6900  1.5500  1.0900
  Hg  2.0000  1.5000  1.2450
]
_symmetry_space_group_name_H-M [Immm]
_cell_length_a [3.3953]
_cell_length_b [9.8691]
_cell_length_c [13.1929]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [71]
_chemical_formula_structural [Ce3CdHg4]
_chemical_formula_sum '[Ce6 Cd2 Hg8]'
_cell_volume [442.0715]
_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  4  0.0000  0.0000  0.2242  1
  Ce  Ce1  2  0.0000  0.5000  0.0000  1
  Cd  Cd2  2  0.0000  0.5000  0.5000  1
  Hg  Hg3  8  0.0000  0.2437  0.3776  1
]