Kinetics studies of 5‐methyl‐2‐hexanol, 2,2‐dimethyl‐3‐hexanol, and 2,4,4‐trimethyl‐1‐pentanol with chlorine atoms: Photooxidation mechanism of 2,4,4‐trimethyl‐1‐pentanol

Abstract

The rate constants for the reaction between chlorine atoms and either 5‐methyl‐2‐hexanol, 2,2‐dimethyl‐3‐hexanol, or 2,4,4‐trimethyl‐1‐pentanol at 298 K were determined using the relative method with 2‐butanol and 1‐pentanol as reference compounds. The values obtained for 5‐methyl‐2‐hexanol, 2,2‐dimethyl‐3‐hexanol, and 2,4,4‐trimethyl‐1‐pentanol (k × 1010 cm3 molec−1 s−1) were, respectively, (2.64 ± 0.5), (2.72 ± 0.5), and (2.50 ± 0.4), in agreement with the values of the rate constants reported in bibliography for similar alcohols and the values estimated by structure activity relationship methods. The photooxidation products of 2,4,4‐trimethyl‐1‐pentanol initiated by chlorine atoms were identified (formaldehyde, 2‐propanone, 2,2‐dimethyl propanal, 4,4,‐dimethyl‐2‐pentanone, and 3,3‐dimethylbutanal), and the reaction mechanism was determined.