data_Sn3Hg
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.79
_cell_length_b   10.79
_cell_length_c   10.79
_cell_angle_alpha   18.46
_cell_angle_beta   18.46
_cell_angle_gamma   18.46
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Sn3Hg
_chemical_formula_sum   'Sn3 Hg1'
_cell_volume   109.94
_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
  Sn  Sn1  1  0.0  0.0  0.85  1.0
  Sn  Sn2  1  0.0  0.0  0.0  1.0
  Sn  Sn3  1  0.0  0.0  0.95  1.0
  Hg  Hg0  1  0.0  0.0  0.9  1.0

data_Sn3Hg
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.99
_cell_length_b   3.46
_cell_length_c   10.79
_cell_angle_alpha   90.0
_cell_angle_beta   100.68
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Sn3Hg
_chemical_formula_sum   'Sn6 Hg2'
_cell_volume   219.87
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  'x, -y, z'
  3  'x+1/2, y+1/2, z'
  4  'x+1/2, -y+1/2, 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
  Sn  Sn0  2  0.0  0.0  0.0  1.0
  Sn  Sn1  2  0.0  0.0  0.05  1.0
  Sn  Sn2  2  0.0  0.0  0.15  1.0
  Hg  Hg3  2  0.0  0.0  0.1  1.0

Sn Sn Sn Hg
HgSn3 is Cyanogen Chloride-derived structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two HgSn3 clusters. Hg(1) is bonded in a linear geometry to one Sn(1) and one Sn(3) atom. The Hg(1)-Sn(1) bond length is 0.55 Å. The Hg(1)-Sn(3) bond length is 0.55 Å. There are three inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a single-bond geometry to one Hg(1) atom. In the second Sn site, Sn(2) is bonded in a single-bond geometry to one Sn(3) atom. The Sn(2)-Sn(3) bond length is 0.53 Å. In the third Sn site, Sn(3) is bonded in a linear geometry to one Hg(1) and one Sn(2) atom.