Reactions of oxygenated radicals in the gas phase. Part 6.—Reactions of isopropylperoxy and isopropoxy radicals
Abstract
The principal products of the photo-oxidation of trans-2,2′-azopropane are acetone, isopropanol, isopropyl hydroperoxide and cis-2,2′-azopropane. The reaction mechanism has been simulated in detail. From the analytical results recorded in this paper and results from the self-reaction of isopropylperoxy radicals, the following rate data have been obtained for these reactions at 302 K. 2(CH3)2CHO2·→(CH3)2CHOH +(CH3)2CO + O2(3a), 2(CH3)2CHO2·→ 2(CH3)2CHO2·+ O2, (3b)(CH3)2CHO·+ O2→(CH3)2CO + HO2·, (5)(CH3)2CHO2H +(CH3)2CHO·→(CH3)2CHOH +(CH3)2CHO2·; (8), k3a= 2.15 ± 0.10 × 105 dm3 mol–1 s–1; k3b= 2.99 ± 0.20 × 105 dm3 mol–1 s–1; k8/k5= 166 ± 5. Further, a value of kd/kc= 0.60 ± 0.01 at 302 K has been found: 2(CH3)2ĊH → CH3CH2CH3+ CH3CH![[double bond, length as m-dash]](https://www.rsc.org/images/entities/char_e001.gif)
CH2(d), 2(CH3)2ĊH →(CH3)2CH—CH(CH3)2(c)
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