SiO2 is quartz (alpha) structured and crystallizes in the trigonal P3_221 space group. Si(1) is bonded to four equivalent O(1) atoms to form corner-sharing SiO4 tetrahedra. O(1) is bonded in a bent 150 degrees geometry to two equivalent Si(1) atoms.
SiO2 is quartz (alpha) structured and crystallizes in the trigonal P3_221 space group. Si(1) is bonded to four equivalent O(1) atoms to form corner-sharing SiO4 tetrahedra. There are two shorter (1.61 Å) and two longer (1.62 Å) Si(1)-O(1) bond lengths. O(1) is bonded in a bent 150 degrees geometry to two equivalent Si(1) atoms.