data_[Na6Ag6Hg2Cl16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Ag  1.9300  1.6000  1.0867
  Hg  2.0000  1.5000  1.2450
  Cl  3.1600  1.0000  0.7800
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [13.6354]
_cell_length_b [8.1236]
_cell_length_c [8.0594]
_cell_angle_alpha [90.0000]
_cell_angle_beta [124.9590]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Na3Ag3HgCl8]
_chemical_formula_sum '[Na6 Ag6 Hg2 Cl16]'
_cell_volume [731.6431]
_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
[
  Na  Na0  4  0.2500  0.2500  0.0000  1.0
  Na  Na1  2  0.0000  0.5000  0.5000  1.0
  Ag  Ag2  4  0.2500  0.2500  0.5000  1.0
  Ag  Ag3  2  0.0000  0.0000  0.0000  1.0
  Hg  Hg4  2  0.0000  0.0000  0.5000  1.0
  Cl  Cl5  8  0.0065  0.2397  0.2662  1.0
  Cl  Cl6  4  0.2398  0.0000  0.7378  1.0
  Cl  Cl7  4  0.2460  0.0000  0.2406  1.0
]