data_[Na2Tc4Hg2O16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Tc  1.9000  1.3500  0.7417
  Hg  2.0000  1.5000  1.2450
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [11.2220]
_cell_length_b [6.6078]
_cell_length_c [5.9363]
_cell_angle_alpha [90.0000]
_cell_angle_beta [105.9928]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [NaTc2HgO8]
_chemical_formula_sum '[Na2 Tc4 Hg2 O16]'
_cell_volume [423.1596]
_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  0.5000  0.5000  1
  Tc  Tc1  4  0.1941  0.5000  0.1675  1
  Hg  Hg2  2  0.0000  0.0000  0.0000  1
  O  O3  8  0.1322  0.2856  0.2680  1
  O  O4  4  0.1432  0.0000  0.7506  1
  O  O5  4  0.1442  0.5000  0.8625  1
]