data_[K3Na3Sn6Hg12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Na  0.9300  1.8000  1.1600
  Sn  1.9600  1.4500  0.8300
  Hg  2.0000  1.5000  1.2450
]
_symmetry_space_group_name_H-M [R-3m]
_cell_length_a [5.1678]
_cell_length_b [5.1678]
_cell_length_c [30.6798]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [166]
_chemical_formula_structural [KNa(SnHg2)2]
_chemical_formula_sum '[K3 Na3 Sn6 Hg12]'
_cell_volume [709.5598]
_cell_formula_units_Z [3]
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
[
  K  K0  3  0.0000  0.0000  0.0000  1.0
  Na  Na1  3  -0.0000  -0.0000  0.5000  1.0
  Sn  Sn2  6  0.0000  0.0000  0.2390  1.0
  Hg  Hg3  6  0.0000  0.0000  0.1255  1.0
  Hg  Hg4  6  0.0000  0.0000  0.3958  1.0
]