data_[Cs4Na16Hg4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Cs  0.7900  2.6000  1.8100
  Na  0.9300  1.8000  1.1600
  Hg  2.0000  1.5000  1.2450
]
_symmetry_space_group_name_H-M [Immm]
_cell_length_a [6.3069]
_cell_length_b [8.3750]
_cell_length_c [21.2511]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [71]
_chemical_formula_structural [CsNa4Hg]
_chemical_formula_sum '[Cs4 Na16 Hg4]'
_cell_volume [1122.4752]
_cell_formula_units_Z [4]
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
[
  Cs  Cs0  4  0.0000  0.0000  0.2159  1.0
  Na  Na1  8  0.0000  0.2633  0.4118  1.0
  Na  Na2  4  0.0000  0.1885  0.0000  1.0
  Na  Na3  4  0.0000  0.5000  0.1278  1.0
  Hg  Hg4  4  0.2404  0.0000  0.5000  1.0
]