The compound described by YSi2 is hexagonal omega structure-like structured and crystallizes in the monoclinic C2/c space group. Y(1) is bonded to twelve equivalent Si(1) atoms to form a mixture of edge and face-sharing YSi12 cuboctahedra. Si(1) is bonded in a 9-coordinate geometry to six equivalent Y(1) and three equivalent Si(1) atoms. is represented by the CIF file [CIF]
data_YSi2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.968
_cell_length_b   3.969
_cell_length_c   7.872
_cell_angle_alpha   105.162
_cell_angle_beta   105.156
_cell_angle_gamma   89.975
_symmetry_Int_Tables_number   1
_cell_volume   115.207
_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
  Y  Y0  1  0.624  0.376  0.750  1.0
  Y  Y1  1  0.376  0.624  0.250  1.0
  Si  Si2  1  0.042  0.794  0.585  1.0
  Si  Si3  1  0.958  0.206  0.415  1.0
  Si  Si4  1  0.206  0.958  0.915  1.0
  Si  Si5  1  0.794  0.042  0.085  1.0
[/CIF]
.
The compound described by YSi2 is hexagonal omega structure-like structured and crystallizes in the monoclinic C2/c space group. Y(1) is bonded to twelve equivalent Si(1) atoms to form a mixture of edge and face-sharing YSi12 cuboctahedra. Si(1) is bonded in a 9-coordinate geometry to six equivalent Y(1) and three equivalent Si(1) atoms. is represented by the CIF file [CIF]
data_YSi2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.968
_cell_length_b   3.969
_cell_length_c   7.872
_cell_angle_alpha   105.162
_cell_angle_beta   105.156
_cell_angle_gamma   89.975
_symmetry_Int_Tables_number   1
_cell_volume   115.207
_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
  Y  Y0  1  0.624  0.376  0.750  1.0
  Y  Y1  1  0.376  0.624  0.250  1.0
  Si  Si2  1  0.042  0.794  0.585  1.0
  Si  Si3  1  0.958  0.206  0.415  1.0
  Si  Si4  1  0.206  0.958  0.915  1.0
  Si  Si5  1  0.794  0.042  0.085  1.0
[/CIF]
.