Phenyldibromosilane, phenylbromosilane and P-methoxyphenyltribromosilane, previously unreported, have been prepared, purified and characterized. Ethyltribromosilane and diethyldibromosilane have been purified and characterized, and some other organobromosilanes further characterized. A new reaction in silicon chemistry has been observed in the preparation of triphenylbromosilane by the reaction of silicon tetrabromide ...