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An Experimental Study of the Gas-Phase Reactions of NO3 Radicals With a Series of Unsaturated Aldehydes: trans-2-hexenal, trans-2-heptenal, and trans-2-octenal

An Experimental Study of the Gas-Phase Reactions of NO3 Radicals With a Series of Unsaturated Aldehydes: trans-2-hexenal, trans-2-heptenal, and trans-2-octenal

Jamila Kerdouci, Bénédicte Picquet-Varrault, Régine Durand-Jolibois, Cécile Gaimoz, Jean-François Doussin

J Phys Chem A. 2012 Oct 18;116(41):10135-42.

PMID: 23004348

Abstract:

Rate constants for the gas-phase reactions of the NO(3) radical with a series of unsaturated aldehydes, trans-2-hexenal, trans-2-heptenal, and trans-2-octenal, have been measured using absolute rate method at 294 ± 3 K and atmospheric pressure. This work was performed to clarify discrepancies found in the literature and thus led to a clearer view of the effect of the increasing carbon chain length on the reactivity of trans-2-alkenals. The rate constants were determined to be (4.7 ± 1.5) × 10(-15), (5.3 ± 1.6) × 10(-15), and (5.6 ± 2.3) × 10(-15) cm(3) molecule(-1) s(-1) for trans-2-hexenal, trans-2-heptenal, and trans-2-octenal, respectively. These results clearly indicate that the carbon chain lengthening of the trans-2-alkenals does not significantly affect the rate constant. In addition, the mechanism for the reaction of NO(3) with these unsaturated aldehydes was also investigated. Unsaturated peroxynitrate-type compounds that are exclusively formed through the abstraction channel were observed as the main products.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP2548870	trans-2-Octenal		2548-87-0	Price

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