Silicon Monoxide
Silicon Monoxide is the chemical compound with the formula SiO where silicon is present in the oxidation state +2. In the vapor phase, it is a diatomic molecule. It has been detected in stellar objects and it has been described as the most common oxide of silicon in the universe. When SiO gas is cooled rapidly, it condenses to form a brown/black polymeric glassy material, (SiO)n, which is available commercially and used to deposit films of SiO.