data_Al2HgOs
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.87
_cell_length_b   4.87
_cell_length_c   4.54
_cell_angle_alpha   106.45
_cell_angle_beta   106.45
_cell_angle_gamma   39.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Al2HgOs
_chemical_formula_sum   'Al2 Hg1 Os1'
_cell_volume   64.69
_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  0.99  0.0  0.29  1.0
  Al  Al1  1  0.34  0.0  0.14  1.0
  Hg  Hg2  1  0.86  0.0  0.35  1.0
  Os  Os3  1  0.55  0.0  0.72  1.0

data_Al2HgOs
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.25
_cell_length_b   4.54
_cell_length_c   4.87
_cell_angle_alpha   106.45
_cell_angle_beta   109.5
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Al2HgOs
_chemical_formula_sum   'Al2 Hg1 Os1'
_cell_volume   64.69
_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  0.14  0.34  1.0
  Al  Al1  1  0.0  0.29  0.99  1.0
  Hg  Hg2  1  0.0  0.35  0.86  1.0
  Os  Os3  1  0.0  0.72  0.55  1.0

Al Al Hg Os
OsHgAl2 crystallizes in the triclinic P1 space group. Os(1) is bonded in a 8-coordinate geometry to two equivalent Os(1), two equivalent Hg(1), two equivalent Al(1), and two equivalent Al(2) atoms. Both Os(1)-Os(1) bond lengths are 3.25 Å. There is one shorter (2.57 Å) and one longer (2.82 Å) Os(1)-Hg(1) bond length. There is one shorter (2.85 Å) and one longer (2.87 Å) Os(1)-Al(1) bond length. There is one shorter (2.37 Å) and one longer (2.55 Å) Os(1)-Al(2) bond length. Hg(1) is bonded in a single-bond geometry to two equivalent Os(1), one Al(1), and one Al(2) atom. The Hg(1)-Al(1) bond length is 0.78 Å. The Hg(1)-Al(2) bond length is 2.41 Å. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded in a single-bond geometry to two equivalent Os(1), one Hg(1), and one Al(2) atom. The Al(1)-Al(2) bond length is 2.02 Å. In the second Al site, Al(2) is bonded in a 4-coordinate geometry to two equivalent Os(1), one Hg(1), and one Al(1) atom.