In the last few years, a growing number of experimental studies have been carried out on the reactivity of chlorine atoms with unsaturated compounds. Isobutene, 1,3-butadiene, methyl crotonate and b,b-dimethylacrolein are emitted in the atmosphere from anthropogenic and biogenic sources as they are used as solvents, intermediates in closed systems for chemical synthesis and in several industrial processes. The release of these volatile organic compounds (VOCs) to the atmosphere is likely to contribute to the formation of ozone, peroxy acetyl nitrate (PAN) and other photooxidant components of photochemical smog that are formed in urban areas through the reactions of the VOCs mainly with OH radicals and other oxidants such as NO3 radicals, O3 molecules and Cl atoms [1].
The aim of this study was to determinate the rate coefficients of the following reactions:
CH2=CH(CH3)2 + Cl �¨ Products, k1
CH2=CHCH=CH2 + Cl �¨ Products, k2
CH3CH=CHC(O)OCH3 + Cl �¨ Products, k3
(CH3)2C=CHC(O)H + Cl �¨ Products k4
The kinetic data obtained in this work has been used in conjunction with other kinetic data to access the possible atmospheric implications of release of the compounds to the atmosphere.