Reactions of recoiling silicon atoms with phosphine and butadiene, and the addition of silylene to butadiene

Abstract

Silicon atoms recoiling from the ³¹P(n.p)³¹Si nuclear transformation in gaseous mixtures of phosphine and buta-1,3-diene give a low yield of[³¹Si]-1-silacyclopent-3-ene and a ³¹SiC₄H₆ compound believed to be [³¹Si]-1-silacylopenta-2,4-diene; the formation of some silylene from phosphine is indicated, and silylene is found to add in high yield to butadiene.