SiO2 is low (alpha) Cristobalite-like structured and crystallizes in the trigonal R-3c space group. Si(1) is bonded to four equivalent O(1) atoms to form distorted corner-sharing SiO4 tetrahedra. O(1) is bonded in a bent 150 degrees geometry to two equivalent Si(1) atoms.
SiO2 is low (alpha) Cristobalite-like structured and crystallizes in the trigonal R-3c space group. Si(1) is bonded to four equivalent O(1) atoms to form distorted corner-sharing SiO4 tetrahedra. There are two shorter (1.64 Å) and two longer (1.66 Å) Si(1)-O(1) bond lengths. O(1) is bonded in a bent 150 degrees geometry to two equivalent Si(1) atoms.