data_[Na6Hg8Bi4]
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
  Bi  2.0200  1.6000  1.0350
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [11.4362]
_cell_length_b [5.2787]
_cell_length_c [8.9310]
_cell_angle_alpha [90.0000]
_cell_angle_beta [105.3774]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Na3(Hg2Bi)2]
_chemical_formula_sum '[Na6 Hg8 Bi4]'
_cell_volume [519.8437]
_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  0.0633  0.5000  0.3360  1.0
  Na  Na1  2  0.0000  0.0000  0.0000  1.0
  Hg  Hg2  4  0.1216  0.0000  0.5850  1.0
  Hg  Hg3  4  0.1498  0.5000  0.0282  1.0
  Bi  Bi4  4  0.2475  0.0000  0.2760  1.0
]