data_[Na2Ag4Hg4]
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
]
_symmetry_space_group_name_H-M [P-1]
_cell_length_a [5.5314]
_cell_length_b [5.6527]
_cell_length_c [8.2362]
_cell_angle_alpha [79.0409]
_cell_angle_beta [79.8349]
_cell_angle_gamma [64.8195]
_symmetry_Int_Tables_number [2]
_chemical_formula_structural [Na(AgHg)2]
_chemical_formula_sum '[Na2 Ag4 Hg4]'
_cell_volume [227.4705]
_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  2  0.2924  0.1328  0.6912  1.0
  Ag  Ag1  2  0.0368  0.7625  0.6175  1.0
  Ag  Ag2  2  0.2527  0.5174  0.9512  1.0
  Hg  Hg3  2  0.2367  0.9865  0.0890  1.0
  Hg  Hg4  2  0.3583  0.4795  0.3389  1.0
]