data_[Na2Li14Hg8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Li  0.9800  1.4500  0.9000
  Hg  2.0000  1.5000  1.2450
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [13.6914]
_cell_length_b [4.9980]
_cell_length_c [8.5994]
_cell_angle_alpha [90.0000]
_cell_angle_beta [123.6345]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [NaLi7Hg4]
_chemical_formula_sum '[Na2 Li14 Hg8]'
_cell_volume [489.9451]
_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  0.0000  0.0000  0.0000  1.0
  Li  Li1  4  0.0736  0.0000  0.4241  1.0
  Li  Li2  4  0.2134  0.0000  0.8817  1.0
  Li  Li3  4  0.2326  0.5000  0.6831  1.0
  Li  Li4  2  0.0000  0.5000  0.0000  1.0
  Hg  Hg5  4  0.0606  0.5000  0.7379  1.0
  Hg  Hg6  4  0.1869  0.5000  0.3365  1.0
]