The crystal structure described by SiI3 is Silicon tetrafluoride-like structured and crystallizes in the trigonal R-3 space group. The structure is zero-dimensional and consists of three hexaiododisilane molecules. Si(1) is bonded in a distorted tetrahedral geometry to one Si(1) and three equivalent I(1) atoms. I(1) is bonded in a single-bond geometry to one Si(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_SiI3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.368
_cell_length_b   7.368
_cell_length_c   8.754
_cell_angle_alpha   65.111
_cell_angle_beta   65.111
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   359.698
_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  0.051  0.051  0.846  1.0
  Si  Si1  1  0.949  0.949  0.154  1.0
  I  I2  1  0.092  0.764  0.748  1.0
  I  I3  1  0.764  0.396  0.748  1.0
  I  I4  1  0.396  0.092  0.748  1.0
  I  I5  1  0.908  0.236  0.252  1.0
  I  I6  1  0.236  0.604  0.252  1.0
  I  I7  1  0.604  0.908  0.252  1.0
[/CIF]
.
The crystal structure described by SiI3 is Silicon tetrafluoride-like structured and crystallizes in the trigonal R-3 space group. The structure is zero-dimensional and consists of three hexaiododisilane molecules. Si(1) is bonded in a distorted tetrahedral geometry to one Si(1) and three equivalent I(1) atoms. I(1) is bonded in a single-bond geometry to one Si(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_SiI3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.368
_cell_length_b   7.368
_cell_length_c   8.754
_cell_angle_alpha   65.111
_cell_angle_beta   65.111
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   359.698
_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  0.051  0.051  0.846  1.0
  Si  Si1  1  0.949  0.949  0.154  1.0
  I  I2  1  0.092  0.764  0.748  1.0
  I  I3  1  0.764  0.396  0.748  1.0
  I  I4  1  0.396  0.092  0.748  1.0
  I  I5  1  0.908  0.236  0.252  1.0
  I  I6  1  0.236  0.604  0.252  1.0
  I  I7  1  0.604  0.908  0.252  1.0
[/CIF]
.