Si2O3 is beta Sn structured and crystallizes in the monoclinic C2/c space group. The structure is zero-dimensional and consists of four dtxsid301220313 molecules. There are five inequivalent Si sites. In the first Si site, Si(1) is bonded in a trigonal non-coplanar geometry to one O(1), one O(5), and one O(6) atom. In the second Si site, Si(2) is bonded in a trigonal non-coplanar geometry to one O(1), one O(2), and one O(7) atom. In the third Si site, Si(3) is bonded in a trigonal non-coplanar geometry to one O(2), one O(3), and one O(8) atom. In the fourth Si site, Si(4) is bonded in a trigonal non-coplanar geometry to one O(3), one O(4), and one O(8) atom. In the fifth Si site, Si(5) is bonded in a trigonal non-coplanar geometry to one O(4), one O(5), and one O(7) atom. There are eight inequivalent O sites. In the first O site, O(8) is bonded in a bent 150 degrees geometry to one Si(3) and one Si(4) atom. In the second O site, O(1) is bonded in a bent 150 degrees geometry to one Si(1) and one Si(2) atom. In the third O site, O(2) is bonded in a bent 150 degrees geometry to one Si(2) and one Si(3) atom. In the fourth O site, O(3) is bonded in a bent 150 degrees geometry to one Si(3) and one Si(4) atom. In the fifth O site, O(4) is bonded in a bent 150 degrees geometry to one Si(4) and one Si(5) atom. In the sixth O site, O(5) is bonded in a bent 150 degrees geometry to one Si(1) and one Si(5) atom. In the seventh O site, O(6) is bonded in a bent 150 degrees geometry to two equivalent Si(1) atoms. In the eighth O site, O(7) is bonded in a bent 150 degrees geometry to one Si(2) and one Si(5) atom.
Si2O3 is beta Sn structured and crystallizes in the monoclinic C2/c space group. The structure is zero-dimensional and consists of four dtxsid301220313 molecules. There are five inequivalent Si sites. In the first Si site, Si(1) is bonded in a trigonal non-coplanar geometry to one O(1), one O(5), and one O(6) atom. The Si(1)-O(1) bond length is 1.65 Å. The Si(1)-O(5) bond length is 1.65 Å. The Si(1)-O(6) bond length is 1.65 Å. In the second Si site, Si(2) is bonded in a trigonal non-coplanar geometry to one O(1), one O(2), and one O(7) atom. The Si(2)-O(1) bond length is 1.64 Å. The Si(2)-O(2) bond length is 1.65 Å. The Si(2)-O(7) bond length is 1.65 Å. In the third Si site, Si(3) is bonded in a trigonal non-coplanar geometry to one O(2), one O(3), and one O(8) atom. The Si(3)-O(2) bond length is 1.66 Å. The Si(3)-O(3) bond length is 1.64 Å. The Si(3)-O(8) bond length is 1.65 Å. In the fourth Si site, Si(4) is bonded in a trigonal non-coplanar geometry to one O(3), one O(4), and one O(8) atom. The Si(4)-O(3) bond length is 1.65 Å. The Si(4)-O(4) bond length is 1.66 Å. The Si(4)-O(8) bond length is 1.65 Å. In the fifth Si site, Si(5) is bonded in a trigonal non-coplanar geometry to one O(4), one O(5), and one O(7) atom. The Si(5)-O(4) bond length is 1.64 Å. The Si(5)-O(5) bond length is 1.64 Å. The Si(5)-O(7) bond length is 1.65 Å. There are eight inequivalent O sites. In the first O site, O(8) is bonded in a bent 150 degrees geometry to one Si(3) and one Si(4) atom. In the second O site, O(1) is bonded in a bent 150 degrees geometry to one Si(1) and one Si(2) atom. In the third O site, O(2) is bonded in a bent 150 degrees geometry to one Si(2) and one Si(3) atom. In the fourth O site, O(3) is bonded in a bent 150 degrees geometry to one Si(3) and one Si(4) atom. In the fifth O site, O(4) is bonded in a bent 150 degrees geometry to one Si(4) and one Si(5) atom. In the sixth O site, O(5) is bonded in a bent 150 degrees geometry to one Si(1) and one Si(5) atom. In the seventh O site, O(6) is bonded in a bent 150 degrees geometry to two equivalent Si(1) atoms. In the eighth O site, O(7) is bonded in a bent 150 degrees geometry to one Si(2) and one Si(5) atom.