Kinetics and energetics of the criegee intermediate in the gas phase. I. The criegee intermediate in ozone–alkene reactions

摘要: The chemistry and energetics of the Criegee intermediate, a primary product ozonolysis alkenes, are discussed in terms recent ab-initio calculations laboratory studies. experimental observations O3–alkene systems can be rationalized on basis general mechanism: where ‡ represents range internal excitation energies available to planar dioxymethylenes (i.e., intermediates) initially formed via exothermic O3-alkene reactions. Estimates given for rate constants these reactions, critique is provided possible role intermediate its isomers formation alkanoic acid anhydrides H2SO4 aerosols O3–alkene–SO2 systems.