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Gas‐phase reactivity study of O( 3 P) atoms with trans ‐CHClCHCl and CHClCCl 2 at 298 K: Comparison to reactions with some other substituted ethenes
Author(s) -
Teruel Mariano A.,
Taccone Raúl A.,
Lane Silvia I.
Publication year - 2001
Publication title -
international journal of chemical kinetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.341
H-Index - 68
eISSN - 1097-4601
pISSN - 0538-8066
DOI - 10.1002/kin.1037
Subject(s) - chemistry , alkene , reaction rate constant , electrophile , reactivity (psychology) , chemiluminescence , double bond , medicinal chemistry , electrophilic addition , gas phase , photochemistry , analytical chemistry (journal) , kinetics , organic chemistry , catalysis , medicine , physics , alternative medicine , pathology , quantum mechanics
Absolute rate coefficients for the gas‐phase reactions of trans ‐dichloroethene and trichloroethene with O( 3 P) atoms have been measured at 298 K using a discharge flow tube coupled to a chemiluminescence detection system. The observed rate constant values are (2.2 ± 0.4) × 10 −13 and (1.4 ± 0.2) × 10 −13 cm 3 molecule −1 s −1 , respectively. The experiments were carried out under pseudo‐first‐order conditions with [O( 3 P)] o ≪ [alkene] o . These results are compared to those of O atom reactions with other chloroethenes and with different electrophiles, such as OH and NO 3 . Different factors that affect the rate of addition to the double bond are considered. The rate constants for these reactions do not correlate in a simple manner with the experimental ionization potential, as is the case in the alkene and methyl‐substituted alkene reactions. © 2001 John Wiley & Sons, Inc. Int J Chem Kinet 33: 415–421, 2001