data_[Na12Hg8Au4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Hg  2.0000  1.5000  1.2450
  Au  2.5400  1.3500  1.0700
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [15.6383]
_cell_length_b [6.4761]
_cell_length_c [5.6734]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.3026]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [Na3Hg2Au]
_chemical_formula_sum '[Na12 Hg8 Au4]'
_cell_volume [574.5605]
_cell_formula_units_Z [4]
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  8  0.1599  0.1182  0.0739  1.0
  Na  Na1  4  0.0000  0.3617  0.2500  1.0
  Hg  Hg2  8  0.1659  0.3727  0.5888  1.0
  Au  Au3  4  0.0000  0.1356  0.7500  1.0
]