The compound described by Na3Hg crystallizes in the hexagonal P6_3/mmc space group. Na(1) is bonded in a distorted see-saw-like geometry to four equivalent Hg(1) atoms. Hg(1) is bonded to twelve equivalent Na(1) atoms to form a mixture of corner and face-sharing HgNa12 cuboctahedra. is represented by the CIF file [CIF]
data_Na3Hg
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.929
_cell_length_b   6.929
_cell_length_c   5.443
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   226.275
_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  1  0.175  0.350  0.250  1.0
  Na  Na1  1  0.650  0.825  0.250  1.0
  Na  Na2  1  0.175  0.825  0.250  1.0
  Na  Na3  1  0.825  0.650  0.750  1.0
  Na  Na4  1  0.350  0.175  0.750  1.0
  Na  Na5  1  0.825  0.175  0.750  1.0
  Hg  Hg6  1  0.333  0.667  0.750  1.0
  Hg  Hg7  1  0.667  0.333  0.250  1.0
[/CIF]
.
The compound described by Na3Hg crystallizes in the hexagonal P6_3/mmc space group. Na(1) is bonded in a distorted see-saw-like geometry to four equivalent Hg(1) atoms. Hg(1) is bonded to twelve equivalent Na(1) atoms to form a mixture of corner and face-sharing HgNa12 cuboctahedra. is represented by the CIF file [CIF]
data_Na3Hg
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.929
_cell_length_b   6.929
_cell_length_c   5.443
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   226.275
_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  1  0.175  0.350  0.250  1.0
  Na  Na1  1  0.650  0.825  0.250  1.0
  Na  Na2  1  0.175  0.825  0.250  1.0
  Na  Na3  1  0.825  0.650  0.750  1.0
  Na  Na4  1  0.350  0.175  0.750  1.0
  Na  Na5  1  0.825  0.175  0.750  1.0
  Hg  Hg6  1  0.333  0.667  0.750  1.0
  Hg  Hg7  1  0.667  0.333  0.250  1.0
[/CIF]
.