data_[Ba4Na8Hg40]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ba  0.8900  2.1500  1.4900
  Na  0.9300  1.8000  1.1600
  Hg  2.0000  1.5000  1.2450
]
_symmetry_space_group_name_H-M [Fmmm]
_cell_length_a [6.5197]
_cell_length_b [14.1192]
_cell_length_c [16.2162]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [69]
_chemical_formula_structural [Ba(NaHg5)2]
_chemical_formula_sum '[Ba4 Na8 Hg40]'
_cell_volume [1492.7492]
_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
[
  Ba  Ba0  4  0.0000  0.0000  0.0000  1.0
  Na  Na1  8  0.2500  0.0000  0.2500  1.0
  Hg  Hg2  16  0.0000  0.1092  0.3891  1.0
  Hg  Hg3  16  0.0000  0.1722  0.1747  1.0
  Hg  Hg4  8  0.2500  0.2500  0.0000  1.0
]