data_[Na6Li3Hg3F18]
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
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [R3]
_cell_length_a [5.6888]
_cell_length_b [5.6888]
_cell_length_c [14.6674]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [146]
_chemical_formula_structural [Na2LiHgF6]
_chemical_formula_sum '[Na6 Li3 Hg3 F18]'
_cell_volume [411.0801]
_cell_formula_units_Z [3]
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  3  0.0000  0.0000  0.4707  1.0
  Na  Na1  3  0.0000  0.0000  0.9689  1.0
  Li  Li2  3  0.0000  0.0000  0.6870  1.0
  Hg  Hg3  3  0.0000  0.0000  0.1824  1.0
  F  F4  9  0.0520  0.3402  0.7521  1.0
  F  F5  9  0.0646  0.7012  0.2577  1.0
]