Spin chemistry of organometallic compounds: Part 1. Interaction of N-bromohexamethyldisilazane with allyltriethylstannane

It has been shown, on the basis of the analysis of CIDNP effects, that allene and (Me3Si)2NH — major products of the photoinduced reaction of Et3SnCH2CHCH2 and (Me3Si)2NBr — result from a radical pair comprised of radical dotCH2CHBrCH2SnEt3 and radical dotN(SiMe3)2 free radicals. Allene is formed through the β-cleavage of the short-lived homolytic substitution product Et3SnCH2CBrCH2.