data_SnHg2Os
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.26
_cell_length_b   3.26
_cell_length_c   8.14
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SnHg2Os
_chemical_formula_sum   'Sn1 Hg2 Os1'
_cell_volume   86.72
_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  Sn3  1  0.0  0.0  0.67  1.0
  Hg  Hg0  1  0.63  0.63  0.0  1.0
  Hg  Hg1  1  0.0  0.0  0.37  1.0
  Os  Os2  1  0.63  0.63  0.17  1.0

data_SnHg2Os
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.62
_cell_length_b   4.62
_cell_length_c   8.14
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   SnHg2Os
_chemical_formula_sum   'Sn2 Hg4 Os2'
_cell_volume   173.44
_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  0.67  1.0
  Hg  Hg1  2  0.0  0.0  0.37  1.0
  Hg  Hg2  2  0.13  0.5  0.0  1.0
  Os  Os3  2  0.13  0.5  0.17  1.0

Sn Hg Hg Os
OsHg2Sn crystallizes in the monoclinic Cm space group. Os(1) is bonded in a 1-coordinate geometry to one Hg(1) and three equivalent Hg(2) atoms. The Os(1)-Hg(1) bond length is 1.39 Å. There is one shorter (2.32 Å) and two longer (2.87 Å) Os(1)-Hg(2) bond lengths. There are two inequivalent Hg sites. In the first Hg site, Hg(1) is bonded in a single-bond geometry to one Os(1) and one Sn(1) atom. The Hg(1)-Sn(1) bond length is 3.20 Å. In the second Hg site, Hg(2) is bonded in a 4-coordinate geometry to three equivalent Os(1) and one Sn(1) atom. The Hg(2)-Sn(1) bond length is 2.45 Å. Sn(1) is bonded in a distorted single-bond geometry to one Hg(1), one Hg(2), and four equivalent Sn(1) atoms. All Sn(1)-Sn(1) bond lengths are 3.26 Å.