Rate constants for the gas‐phase reactions of Ozone with unsaturated Aliphatic Alcohols

Abstract The gas‐phase reaction of ozone with unsaturated alcohols in air has been investigated at atmospheric pressure and ambient temperature (288–291 K). Cyclohexane was added to scavenge the hydroxyl radical which forms as a product of the ozone–unsaturated alcohol reaction. The reaction rate constants, in units of 10 −18 cm 3 molecule −1 s −1 , are 16.2 ± 0.7 for (±) 3‐buten‐2‐ol, 17.9 ± 1.8 for 1‐penten‐3‐ol, 10.0 ± 0.3 for 2‐methyl‐3‐buten‐2‐ol, 169 ± 25 for cis ‐2 penten‐1‐ol, and 251 ± 41 for 2‐buten‐1‐ol (mixture of isomers). Substituent effects on reactivity are discussed. The reactivity of unsaturated alcohols towards ozone is similar to that of their alkene structural homologues. Implications of these results with respect to the atmospheric persistence of unsaturated alcohols are briefly discussed. © 1994 John Wiley & Sons, Inc.