Silicon (Si) is an element, like oxygen, gold, carbon, or helium. It is not a compound and contains no compounds. Perhaps you meant silcone, which is a complex compound containing Si-O groupings.
Wikipedia describes silicone thus: "More precisely called polymerized siloxanes or polysiloxanes, silicones are mixed inorganic-organic polymers with the chemical formula [R2SiO]n, where R = organic groups such as methyl, ethyl, and phenyl. These materials consist of an inorganic silicon-oxygen backbone (…-Si-O-Si-O-Si-O-…) with organic side groups attached to the silicon atoms, which are four-coordinate."