The compound described by OsSi2 is Magnesium tetraboride-like structured and crystallizes in the monoclinic C2/m space group. Os(1) is bonded in a 8-coordinate geometry to three equivalent Si(2) and five equivalent Si(1) atoms. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a 5-coordinate geometry to five equivalent Os(1) atoms. In the second Si site, Si(2) is bonded in a 6-coordinate geometry to three equivalent Os(1) and three equivalent Si(2) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Si2Os
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.000
_cell_length_b   4.574
_cell_length_c   6.758
_cell_angle_alpha   80.179
_cell_angle_beta   77.176
_cell_angle_gamma   70.859
_symmetry_Int_Tables_number   1
_cell_volume   84.938
_cell_formula_units_Z   2
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  0.394  0.313  0.899  1.0
  Si  Si1  1  0.606  0.687  0.101  1.0
  Si  Si2  1  0.858  0.756  0.528  1.0
  Si  Si3  1  0.142  0.244  0.472  1.0
  Os  Os4  1  0.156  0.891  0.797  1.0
  Os  Os5  1  0.844  0.109  0.203  1.0
[/CIF]
.
The compound described by OsSi2 is Magnesium tetraboride-like structured and crystallizes in the monoclinic C2/m space group. Os(1) is bonded in a 8-coordinate geometry to three equivalent Si(2) and five equivalent Si(1) atoms. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a 5-coordinate geometry to five equivalent Os(1) atoms. In the second Si site, Si(2) is bonded in a 6-coordinate geometry to three equivalent Os(1) and three equivalent Si(2) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Si2Os
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.000
_cell_length_b   4.574
_cell_length_c   6.758
_cell_angle_alpha   80.179
_cell_angle_beta   77.176
_cell_angle_gamma   70.859
_symmetry_Int_Tables_number   1
_cell_volume   84.938
_cell_formula_units_Z   2
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  0.394  0.313  0.899  1.0
  Si  Si1  1  0.606  0.687  0.101  1.0
  Si  Si2  1  0.858  0.756  0.528  1.0
  Si  Si3  1  0.142  0.244  0.472  1.0
  Os  Os4  1  0.156  0.891  0.797  1.0
  Os  Os5  1  0.844  0.109  0.203  1.0
[/CIF]
.