An electron spin resonance study of the Group IVB organometallic adducts of 2,6-di-t-butylbenzoquinone

Abstract

2,6-Di-t-butylbenzoquinone can interact with group IVB organometallic compounds to give the stable substituted phenoxyl radicals detectable by e.s.r. The strong bonding between silicon and oxygen atoms together with the unusual stability of the resulting phenoxyl radicals show that 2,6-di-t-butylbenzoquinone is an excellent spin trap of organosilyl radicals. This quinone has also been used successfully to trap both diphenylphosphino and phenylthiyl radicals.