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.
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. The Si(1)-O(2) bond length is 1.63 Å. Both Si(1)-O(1) bond lengths are 1.63 Å. The Si(1)-Cl(1) bond length is 2.02 Å. 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. All Si(2)-O(2) bond lengths are 1.63 Å. The Si(2)-Cl(2) bond length is 2.02 Å. 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.