SiO2 is Low Tridymite-like structured and crystallizes in the orthorhombic Ima2 space group. Si(1) is bonded to one O(2), one O(3), and two equivalent O(1) atoms to form corner-sharing SiO4 tetrahedra. There are three 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(3) is bonded in a bent 150 degrees geometry to two equivalent Si(1) atoms. In the third 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 orthorhombic Ima2 space group. Si(1) is bonded to one O(2), one O(3), and two equivalent O(1) atoms to form corner-sharing SiO4 tetrahedra. The Si(1)-O(2) bond length is 1.60 Å. The Si(1)-O(3) bond length is 1.62 Å. There is one shorter (1.61 Å) and one longer (1.62 Å) Si(1)-O(1) bond length. There are three 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(3) is bonded in a bent 150 degrees geometry to two equivalent Si(1) atoms. In the third O site, O(2) is bonded in a bent 150 degrees geometry to two equivalent Si(1) atoms.