SiO2 crystallizes in the tetragonal P4/nnc space group. Si(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form distorted corner-sharing SiO4 trigonal pyramids. There are four inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to two equivalent Si(1) atoms. In the second O site, O(2) is bonded in a linear geometry to two equivalent Si(1) atoms. In the third O site, O(3) is bonded in a bent 120 degrees geometry to two equivalent Si(1) atoms. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to two equivalent Si(1) atoms.
SiO2 crystallizes in the tetragonal P4/nnc space group. Si(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form distorted corner-sharing SiO4 trigonal pyramids. The Si(1)-O(1) bond length is 1.58 Å. The Si(1)-O(2) bond length is 1.66 Å. The Si(1)-O(3) bond length is 1.93 Å. The Si(1)-O(4) bond length is 1.71 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to two equivalent Si(1) atoms. In the second O site, O(2) is bonded in a linear geometry to two equivalent Si(1) atoms. In the third O site, O(3) is bonded in a bent 120 degrees geometry to two equivalent Si(1) atoms. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to two equivalent Si(1) atoms.