SiO2 is Low Tridymite-like structured and crystallizes in the cubic Im-3m space group. Si(1) is bonded to one O(1) and three equivalent O(2) atoms to form corner-sharing SiO4 tetrahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded in a linear geometry to two equivalent Si(1) atoms. In the second O site, O(2) is bonded in a bent 150 degrees geometry to two equivalent Si(1) atoms.
SiO2 is Low Tridymite-like structured and crystallizes in the cubic Im-3m space group. Si(1) is bonded to one O(1) and three equivalent O(2) atoms to form corner-sharing SiO4 tetrahedra. The Si(1)-O(1) bond length is 1.59 Å. All Si(1)-O(2) bond lengths are 1.61 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded in a linear geometry to two equivalent Si(1) atoms. In the second O site, O(2) is bonded in a bent 150 degrees geometry to two equivalent Si(1) atoms.