data_Na2HgW
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.39
_cell_length_b   5.39
_cell_length_c   6.11
_cell_angle_alpha   95.25
_cell_angle_beta   95.25
_cell_angle_gamma   29.2
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Na2HgW
_chemical_formula_sum   'Na2 Hg1 W1'
_cell_volume   86.1
_cell_formula_units_Z   1
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  Na1  1  0.52  0.0  0.02  1.0
  Na  Na2  1  0.14  0.0  0.56  1.0
  Hg  Hg0  1  0.67  0.0  0.79  1.0
  W  W3  1  0.87  0.0  0.84  1.0

data_Na2HgW
_symmetry_space_group_name_H-M   P1
_cell_length_a   2.72
_cell_length_b   5.39
_cell_length_c   6.11
_cell_angle_alpha   95.25
_cell_angle_beta   90.0
_cell_angle_gamma   104.6
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Na2HgW
_chemical_formula_sum   'Na2 Hg1 W1'
_cell_volume   86.1
_cell_formula_units_Z   1
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  0.0  0.48  0.98  1.0
  Na  Na1  1  0.0  0.86  0.44  1.0
  Hg  Hg2  1  0.0  0.33  0.21  1.0
  W  W3  1  0.0  0.13  0.16  1.0

Na Na Hg W
Na2WHg crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one Na2WHg cluster. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded in a single-bond geometry to one Hg(1) atom. The Na(1)-Hg(1) bond length is 1.65 Å. In the second Na site, Na(2) is bonded in a distorted single-bond geometry to one W(1) atom. The Na(2)-W(1) bond length is 2.37 Å. W(1) is bonded in a distorted bent 120 degrees geometry to one Na(2) and one Hg(1) atom. The W(1)-Hg(1) bond length is 1.09 Å. Hg(1) is bonded in a water-like geometry to one Na(1) and one W(1) atom.