data_SnHgGe
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.0
_cell_length_b   7.76
_cell_length_c   3.24
_cell_angle_alpha   82.35
_cell_angle_beta   73.96
_cell_angle_gamma   23.69
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SnHgGe
_chemical_formula_sum   'Sn1 Hg1 Ge1'
_cell_volume   73.97
_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  Sn2  1  0.83  0.68  0.16  1.0
  Hg  Hg1  1  0.83  0.68  0.96  1.0
  Ge  Ge0  1  0.83  0.68  0.06  1.0

data_SnHgGe
_symmetry_space_group_name_H-M   Cm
_cell_length_a   3.66
_cell_length_b   15.08
_cell_length_c   3.24
_cell_angle_alpha   90.0
_cell_angle_beta   124.35
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   SnHgGe
_chemical_formula_sum   'Sn2 Hg2 Ge2'
_cell_volume   147.94
_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  0.33  0.0  0.01  1.0
  Hg  Hg1  2  0.03  0.5  0.21  1.0
  Ge  Ge2  2  0.43  0.0  0.11  1.0

Sn Hg Ge
HgSnGe crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two HgSnGe clusters. Hg(1) is bonded in a distorted single-bond geometry to one Ge(1) atom. The Hg(1)-Ge(1) bond length is 0.32 Å. Sn(1) is bonded in a single-bond geometry to one Ge(1) atom. The Sn(1)-Ge(1) bond length is 0.33 Å. Ge(1) is bonded in a linear geometry to one Hg(1) and one Sn(1) atom.