Rate coefficients of the reactions of Cl atoms with alpha,betha unsaturated carbonyl compounds at atmospheric pressure and structure activity relations (SARs)

M. A. TERUEL, M. ACHAD AND M. B. BLANCO

Elsevier

Año: 2009 vol. 479 p. 25 - 25

he kinetics of the reactions of Cl atoms with three unsaturated carbonyl compounds at 298 K and atmospheric pressure were investigated for the first time using the GC–FID technique. Rate coefficients (in cm3 molecule1 s1) of k1(Cl + CH2@CHC(O)CH2CH3) = (2.91 ± 1.10) 1010, k2(Cl + CH2@CHOC(O)CH2- CH3) = (2.06 ± 0.36) 1010 and k3(Cl + CH2@CHC(O)OCH2CH3) = (2.53 ± 0.46) 1010 were obtained using the relative rate method with different references. Structure activity relationships (SARs) were developed for the reactions of Cl with a wide range of unsaturated compounds. On the basis of our kinetic measurements, tropospheric lifetimes of the studied unsaturated compounds are estimated.