OXIRANE FORMATION IN THE REACTION OF NO3 RADICALS WITH ALKENES

Abstract

AbstractMass spectra of products formed in the reaction between NO3 and cis‐2‐butene, isobutene, 2‐methyl‐2‐butene and 2,3‐dimethyl‐2‐butene at 298 K and p = 3–10 mbar were obtained, using a fast flow system with molecular beam sampling. The spectra indicate formation of an oxirane in each reaction. Within experimental error the oxirane yields in the reaction of cis‐2‐butene and of 2,3‐dimethyl‐2‐butene were identical (90 ± 10)%. The rate of oxirane formation was found to obey the rate equation for the reaction:NO3 + alkene → oxirane + NO2.    (1).Good agreement was obtained for the rate constants of reaction (1) determined from the rate of oxirane formation and those determined in earlier w..