The crystal structure described by Si2O3Cl2 is beta Polonium structured and crystallizes in the trigonal R-3 space group. The structure is zero-dimensional and consists of three perchlorooctasilsesquioxane molecules. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(2), two equivalent O(1), and one Cl(1) atom to form corner-sharing SiClO3 tetrahedra. In the second Si site, Si(2) is bonded to three equivalent O(2) and one Cl(2) atom to form corner-sharing SiClO3 tetrahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to two equivalent Si(1) atoms. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one Si(1) and one Si(2) atom. There are two inequivalent Cl sites. In the first Cl site, Cl(1) is bonded in a single-bond geometry to one Si(1) atom. In the second Cl site, Cl(2) is bonded in a single-bond geometry to one Si(2) atom. is represented by the CIF card [CIF]
data_Si2Cl2O3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.671
_cell_length_b   8.671
_cell_length_c   8.671
_cell_angle_alpha   95.784
_cell_angle_beta   95.784
_cell_angle_gamma   95.784
_symmetry_Int_Tables_number   1
_cell_volume   641.283
_cell_formula_units_Z   4
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  0.138  0.742  0.918  1.0
  Si  Si1  1  0.918  0.138  0.742  1.0
  Si  Si2  1  0.202  0.202  0.202  1.0
  Si  Si3  1  0.862  0.258  0.082  1.0
  Si  Si4  1  0.082  0.862  0.258  1.0
  Si  Si5  1  0.258  0.082  0.862  1.0
  Si  Si6  1  0.798  0.798  0.798  1.0
  Si  Si7  1  0.742  0.918  0.138  1.0
  Cl  Cl8  1  0.242  0.550  0.856  1.0
  Cl  Cl9  1  0.550  0.856  0.242  1.0
  Cl  Cl10  1  0.758  0.450  0.144  1.0
  Cl  Cl11  1  0.144  0.758  0.450  1.0
  Cl  Cl12  1  0.450  0.144  0.758  1.0
  Cl  Cl13  1  0.647  0.647  0.647  1.0
  Cl  Cl14  1  0.353  0.353  0.353  1.0
  Cl  Cl15  1  0.856  0.242  0.550  1.0
  O  O16  1  0.241  0.894  0.871  1.0
  O  O17  1  0.037  0.276  0.173  1.0
  O  O18  1  0.173  0.037  0.276  1.0
  O  O19  1  0.276  0.173  0.037  1.0
  O  O20  1  0.827  0.963  0.724  1.0
  O  O21  1  0.724  0.827  0.963  1.0
  O  O22  1  0.963  0.724  0.827  1.0
  O  O23  1  0.106  0.129  0.759  1.0
  O  O24  1  0.871  0.241  0.894  1.0
  O  O25  1  0.894  0.871  0.241  1.0
  O  O26  1  0.759  0.106  0.129  1.0
  O  O27  1  0.129  0.759  0.106  1.0
[/CIF]
.
The crystal structure described by Si2O3Cl2 is beta Polonium structured and crystallizes in the trigonal R-3 space group. The structure is zero-dimensional and consists of three perchlorooctasilsesquioxane molecules. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(2), two equivalent O(1), and one Cl(1) atom to form corner-sharing SiClO3 tetrahedra. In the second Si site, Si(2) is bonded to three equivalent O(2) and one Cl(2) atom to form corner-sharing SiClO3 tetrahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to two equivalent Si(1) atoms. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one Si(1) and one Si(2) atom. There are two inequivalent Cl sites. In the first Cl site, Cl(1) is bonded in a single-bond geometry to one Si(1) atom. In the second Cl site, Cl(2) is bonded in a single-bond geometry to one Si(2) atom. is represented by the CIF card [CIF]
data_Si2Cl2O3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.671
_cell_length_b   8.671
_cell_length_c   8.671
_cell_angle_alpha   95.784
_cell_angle_beta   95.784
_cell_angle_gamma   95.784
_symmetry_Int_Tables_number   1
_cell_volume   641.283
_cell_formula_units_Z   4
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  0.138  0.742  0.918  1.0
  Si  Si1  1  0.918  0.138  0.742  1.0
  Si  Si2  1  0.202  0.202  0.202  1.0
  Si  Si3  1  0.862  0.258  0.082  1.0
  Si  Si4  1  0.082  0.862  0.258  1.0
  Si  Si5  1  0.258  0.082  0.862  1.0
  Si  Si6  1  0.798  0.798  0.798  1.0
  Si  Si7  1  0.742  0.918  0.138  1.0
  Cl  Cl8  1  0.242  0.550  0.856  1.0
  Cl  Cl9  1  0.550  0.856  0.242  1.0
  Cl  Cl10  1  0.758  0.450  0.144  1.0
  Cl  Cl11  1  0.144  0.758  0.450  1.0
  Cl  Cl12  1  0.450  0.144  0.758  1.0
  Cl  Cl13  1  0.647  0.647  0.647  1.0
  Cl  Cl14  1  0.353  0.353  0.353  1.0
  Cl  Cl15  1  0.856  0.242  0.550  1.0
  O  O16  1  0.241  0.894  0.871  1.0
  O  O17  1  0.037  0.276  0.173  1.0
  O  O18  1  0.173  0.037  0.276  1.0
  O  O19  1  0.276  0.173  0.037  1.0
  O  O20  1  0.827  0.963  0.724  1.0
  O  O21  1  0.724  0.827  0.963  1.0
  O  O22  1  0.963  0.724  0.827  1.0
  O  O23  1  0.106  0.129  0.759  1.0
  O  O24  1  0.871  0.241  0.894  1.0
  O  O25  1  0.894  0.871  0.241  1.0
  O  O26  1  0.759  0.106  0.129  1.0
  O  O27  1  0.129  0.759  0.106  1.0
[/CIF]
.