data_[Na4Cr2Hg2F16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Cr  1.6600  1.4000  0.9400
  Hg  2.0000  1.5000  1.2450
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [Cmmm]
_cell_length_a [6.8925]
_cell_length_b [7.2066]
_cell_length_c [7.2513]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [65]
_chemical_formula_structural [Na2CrHgF8]
_chemical_formula_sum '[Na4 Cr2 Hg2 F16]'
_cell_volume [360.1847]
_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  4  0.0000  0.5000  0.2608  1.0
  Cr  Cr1  2  0.0000  0.0000  0.5000  1.0
  Hg  Hg2  2  0.0000  0.0000  0.0000  1.0
  F  F3  8  0.0000  0.1808  0.3135  1.0
  F  F4  4  0.2004  0.5000  0.0000  1.0
  F  F5  4  0.2330  0.5000  0.5000  1.0
]