data_[Na14Hg4Bi4]
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 [Imm2]
_cell_length_a [5.2345]
_cell_length_b [14.3109]
_cell_length_c [8.8223]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [44]
_chemical_formula_structural [Na7(HgBi)2]
_chemical_formula_sum '[Na14 Hg4 Bi4]'
_cell_volume [660.8768]
_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  0.0000  0.1393  0.3111  1.0
  Na  Na1  4  0.0000  0.1667  0.8950  1.0
  Na  Na2  4  0.0000  0.3498  0.1312  1.0
  Na  Na3  2  0.0000  0.5000  0.4891  1.0
  Hg  Hg4  2  0.0000  0.0000  0.6301  1.0
  Hg  Hg5  2  0.0000  0.5000  0.8656  1.0
  Bi  Bi6  4  0.0000  0.2944  0.5972  1.0
]