data_[Na4Hg4Te2O12]
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
  Te  2.1000  1.4000  1.2933
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [6.1844]
_cell_length_b [9.7886]
_cell_length_c [5.9668]
_cell_angle_alpha [90.0000]
_cell_angle_beta [113.1081]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Na2Hg2TeO6]
_chemical_formula_sum '[Na4 Hg4 Te2 O12]'
_cell_volume [332.2283]
_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  0.1767  0.5000  1.0
  Hg  Hg1  4  0.0000  0.3361  0.0000  1.0
  Te  Te2  2  0.0000  0.0000  0.0000  1.0
  O  O3  8  0.1945  0.1437  0.2213  1.0
  O  O4  4  0.2059  0.0000  0.8121  1.0
]