data_[Na1Ag1Hg2F8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Ag  1.9300  1.6000  1.0867
  Hg  2.0000  1.5000  1.2450
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [P2/m]
_cell_length_a [5.6943]
_cell_length_b [4.6659]
_cell_length_c [7.1739]
_cell_angle_alpha [90.0000]
_cell_angle_beta [94.1065]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [10]
_chemical_formula_structural [NaAgHg2F8]
_chemical_formula_sum '[Na1 Ag1 Hg2 F8]'
_cell_volume [190.1127]
_cell_formula_units_Z [1]
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  1  0.0000  0.0000  0.5000  1.0
  Ag  Ag1  1  0.0000  0.0000  0.0000  1.0
  Hg  Hg2  2  0.4975  0.5000  0.7530  1.0
  F  F3  2  0.2288  0.0000  0.2254  1.0
  F  F4  2  0.2365  0.0000  0.8066  1.0
  F  F5  2  0.2462  0.5000  0.5247  1.0
  F  F6  2  0.2476  0.5000  0.0227  1.0
]