data_[Hg16Br2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Hg  2.0000  1.5000  1.2450
  Br  2.9600  1.1500  0.8825
]
_symmetry_space_group_name_H-M [I4/mmm]
_cell_length_a [9.4781]
_cell_length_b [9.4781]
_cell_length_c [5.9628]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [139]
_chemical_formula_structural [Hg8Br]
_chemical_formula_sum '[Hg16 Br2]'
_cell_volume [535.6551]
_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
[
  Hg  Hg0  8  0.0000  0.3352  0.0000  1.0
  Hg  Hg1  8  0.1664  0.1664  0.5000  1.0
  Br  Br2  2  0.0000  0.0000  0.0000  1.0
]