data_Si2OsAu
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.4
_cell_length_b   4.4
_cell_length_c   3.05
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   97.9
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Si2OsAu
_chemical_formula_sum   'Si2 Os1 Au1'
_cell_volume   58.44
_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
  Si  Si2  1  0.44  0.66  0.53  1.0
  Si  Si3  1  0.44  0.34  0.53  1.0
  Os  Os1  1  0.0  0.0  0.0  1.0
  Au  Au0  1  0.89  0.0  0.0  1.0

data_Si2OsAu
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.05
_cell_length_b   4.4
_cell_length_c   4.4
_cell_angle_alpha   97.9
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Si2OsAu
_chemical_formula_sum   'Si2 Os1 Au1'
_cell_volume   58.44
_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
  Si  Si0  1  0.53  0.44  0.34  1.0
  Si  Si1  1  0.53  0.44  0.66  1.0
  Os  Os2  1  0.0  0.0  0.0  1.0
  Au  Au3  1  0.0  0.89  0.0  1.0

Si Si Os Au
OsAuSi2 crystallizes in the triclinic P1 space group. Os(1) is bonded in a single-bond geometry to one Au(1), two equivalent Si(1), and two equivalent Si(2) atoms. The Os(1)-Au(1) bond length is 0.50 Å. There is one shorter (2.99 Å) and one longer (3.08 Å) Os(1)-Si(1) bond length. There is one shorter (2.71 Å) and one longer (2.80 Å) Os(1)-Si(2) bond length. Au(1) is bonded in a single-bond geometry to one Os(1), two equivalent Si(1), and two equivalent Si(2) atoms. There is one shorter (2.71 Å) and one longer (2.80 Å) Au(1)-Si(1) bond length. There is one shorter (2.99 Å) and one longer (3.08 Å) Au(1)-Si(2) bond length. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a 5-coordinate geometry to two equivalent Os(1), two equivalent Au(1), and one Si(2) atom. The Si(1)-Si(2) bond length is 1.39 Å. In the second Si site, Si(2) is bonded in a 5-coordinate geometry to two equivalent Os(1), two equivalent Au(1), and one Si(1) atom.