data_[Na6Hg4Sb2O12]
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
  Sb  2.0500  1.4500  0.8300
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [6.0186]
_cell_length_b [10.0739]
_cell_length_c [5.9211]
_cell_angle_alpha [90.0000]
_cell_angle_beta [112.5598]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Na3Hg2SbO6]
_chemical_formula_sum '[Na6 Hg4 Sb2 O12]'
_cell_volume [331.5324]
_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  0.1686  0.5000  1.0
  Na  Na1  2  0.0000  0.5000  0.5000  1.0
  Hg  Hg2  4  0.0000  0.3312  0.0000  1.0
  Sb  Sb3  2  0.0000  0.0000  0.0000  1.0
  O  O4  8  0.2091  0.1431  0.2287  1.0
  O  O5  4  0.2161  0.0000  0.8020  1.0
]