data_YSiSb2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.46
_cell_length_b   3.46
_cell_length_c   8.72
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   YSiSb2
_chemical_formula_sum   'Y1 Si1 Sb2'
_cell_volume   104.61
_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
  Y  Y3  1  0.73  0.73  0.21  1.0
  Si  Si2  1  0.0  0.0  0.27  1.0
  Sb  Sb0  1  0.0  0.0  0.43  1.0
  Sb  Sb1  1  0.73  0.73  0.9  1.0

data_YSiSb2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.9
_cell_length_b   4.9
_cell_length_c   8.72
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   YSiSb2
_chemical_formula_sum   'Y2 Si2 Sb4'
_cell_volume   209.22
_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
  Y  Y0  2  0.23  0.5  0.21  1.0
  Si  Si1  2  0.0  0.0  0.27  1.0
  Sb  Sb2  2  0.0  0.0  0.43  1.0
  Sb  Sb3  2  0.23  0.5  0.9  1.0

Y Si Sb Sb
YSiSb2 crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two YSiSb2 clusters. Y(1) is bonded in a distorted single-bond geometry to one Si(1) and one Sb(2) atom. The Y(1)-Si(1) bond length is 1.41 Å. The Y(1)-Sb(2) bond length is 2.70 Å. Si(1) is bonded in a 2-coordinate geometry to one Y(1) and one Sb(1) atom. The Si(1)-Sb(1) bond length is 1.46 Å. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a single-bond geometry to one Si(1) atom. In the second Sb site, Sb(2) is bonded in a single-bond geometry to one Y(1) atom.