ISSN:
0538-8066
Keywords:
Chemistry
;
Physical Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
The competitive photochlorination and chlorine photosensitized dehydrochlorination of 1,1,1,2-C2H2Cl4 have been studied over the temperature range of 349.4-404.5 K after less than 1% conversion. The results are discussed and a value of \documentclass{article}\pagestyle{empty}\begin{document}$$ \log k_{4A} (\sec ^{ - 1}) = (11.6\pm 0.6) - (16,400\pm 1000)/4.58T $$\end{document} is proposed for the reaction \documentclass{article}\pagestyle{empty}\begin{document}$$ {\rm CCl}_{\rm 3} {\rm CHCl}\mathop \to \limits^{(4{\rm A)}} {\rm CCl}_{\rm 2} {\rm CHCl + Cl} $$\end{document} This result, combined with existing thermochemical data, indicates that there is no evidence of an activation energy for the addition of a Cl atom on the most chlorinated carbon in trichloroethylene: in that case the selectivity of the addition of Cl on the less chlorinated carbon should not depend on temperature.
Additional Material:
3 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/kin.550110203
