data_AlHgOs2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.85
_cell_length_b   2.85
_cell_length_c   8.07
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   AlHgOs2
_chemical_formula_sum   'Al1 Hg1 Os2'
_cell_volume   65.48
_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
  Al  Al0  1  0.0  0.0  0.72  1.0
  Hg  Hg1  1  0.42  0.42  0.1  1.0
  Os  Os2  1  0.0  0.0  0.3  1.0
  Os  Os3  1  0.42  0.42  0.98  1.0

data_AlHgOs2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.03
_cell_length_b   4.03
_cell_length_c   8.07
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   AlHgOs2
_chemical_formula_sum   'Al2 Hg2 Os4'
_cell_volume   130.95
_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
  Al  Al0  2  0.0  0.0  0.72  1.0
  Hg  Hg1  2  0.42  0.0  0.1  1.0
  Os  Os2  2  0.0  0.0  0.3  1.0
  Os  Os3  2  0.42  0.0  0.98  1.0

Al Hg Os Os
Os2HgAl crystallizes in the monoclinic Cm space group. There are two inequivalent Os sites. In the first Os site, Os(1) is bonded in a 9-coordinate geometry to four equivalent Os(1), four equivalent Hg(1), and one Al(1) atom. All Os(1)-Os(1) bond lengths are 2.85 Å. There are a spread of Os(1)-Hg(1) bond distances ranging from 2.31-2.79 Å. The Os(1)-Al(1) bond length is 3.43 Å. In the second Os site, Os(2) is bonded in a single-bond geometry to one Hg(1) and four equivalent Al(1) atoms. The Os(2)-Hg(1) bond length is 1.04 Å. There are a spread of Os(2)-Al(1) bond distances ranging from 2.67-3.09 Å. Hg(1) is bonded in a distorted single-bond geometry to one Os(2) and four equivalent Os(1) atoms. Al(1) is bonded in a 9-coordinate geometry to one Os(1), four equivalent Os(2), and four equivalent Al(1) atoms. All Al(1)-Al(1) bond lengths are 2.85 Å.