data_[Na2Hg4F16]
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
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [10.9960]
_cell_length_b [6.7208]
_cell_length_c [4.6061]
_cell_angle_alpha [90.0000]
_cell_angle_beta [92.7120]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [NaHg2F8]
_chemical_formula_sum '[Na2 Hg4 F16]'
_cell_volume [340.0151]
_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
  Hg  Hg1  4  0.1645  0.5000  0.4087  1.0
  F  F2  8  0.1388  0.1960  0.3705  1.0
  F  F3  4  0.0618  0.5000  0.7678  1.0
  F  F4  4  0.2179  0.0000  0.9162  1.0
]