SiO2 is Anatase-like structured and crystallizes in the tetragonal P4_12_12 space group. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded to two equivalent O(2) and two equivalent O(3) atoms to form distorted corner-sharing SiO4 tetrahedra. In the second Si site, Si(2) is bonded to one O(2), one O(3), and two equivalent O(1) atoms to form distorted corner-sharing SiO4 tetrahedra. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to two equivalent Si(2) atoms. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Si(1) and one Si(2) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Si(1) and one Si(2) atom.
SiO2 is Anatase-like structured and crystallizes in the tetragonal P4_12_12 space group. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded to two equivalent O(2) and two equivalent O(3) atoms to form distorted corner-sharing SiO4 tetrahedra. Both Si(1)-O(2) bond lengths are 1.64 Å. Both Si(1)-O(3) bond lengths are 1.64 Å. In the second Si site, Si(2) is bonded to one O(2), one O(3), and two equivalent O(1) atoms to form distorted corner-sharing SiO4 tetrahedra. The Si(2)-O(2) bond length is 1.65 Å. The Si(2)-O(3) bond length is 1.64 Å. Both Si(2)-O(1) bond lengths are 1.64 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to two equivalent Si(2) atoms. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Si(1) and one Si(2) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Si(1) and one Si(2) atom.