data_[Co2Hg2I8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Co  1.8800  1.3500  0.7683
  Hg  2.0000  1.5000  1.2450
  I  2.6600  1.4000  1.2733
]
_symmetry_space_group_name_H-M [P-42c]
_cell_length_a [6.5971]
_cell_length_b [6.5971]
_cell_length_c [11.7742]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [112]
_chemical_formula_structural [CoHgI4]
_chemical_formula_sum '[Co2 Hg2 I8]'
_cell_volume [512.4367]
_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
[
  Co  Co0  2  0.0000  0.5000  0.2500  1
  Hg  Hg1  2  0.0000  0.0000  0.0000  1
  I  I2  8  0.2406  0.2790  0.3688  1
]