The gas-phase photochlorination (A = 436 nm) of the 1 , l , l ,2-C2H2C1( has been studied in the absence and the presence of oxygen at temperatures between 360 and 420°K. Activation energies have been estimated for the following reaction steps: The dissociation energy D(CC13CHCl-02) f (24.8 =t 1.5)
Competitive chlorination–dehydrochlorination of 1,1,1,2-C2H2Cl4
✍ Scribed by J. Olbregts
- Publisher
- John Wiley and Sons
- Year
- 1979
- Tongue
- English
- Weight
- 367 KB
- Volume
- 11
- Category
- Article
- ISSN
- 0538-8066
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
The competitive photochlorination and chlorine photosensitized dehydrochlorination of 1,1,1,2‐C~2~H~2~Cl~4~ 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
is proposed for the reaction
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.
📜 SIMILAR VOLUMES
Rate constants for the reactions of atomic oxygen ( 0 3 P ) with C&3F, C&IaCl,C@3Br, 1, l-CzHzFz, and I ,2-C&IzFz have been measured at 307' K using a discharge-flow system coupled to a mass spectrometer. The rate constants for these reactions are (in units of 1011cm3mole-1s-1)2.63 &0.38,5.22 =tO0.2
## Abstract A series of 2‐(1__H__‐1,2,4‐triazol‐1‐yl)‐2__H__‐1,4‐benzothiazines were designed and synthesized by condensation of 1,2,4‐triazole‐substituted ω‐bromoacetophenones and __o__‐aminothiophenols with the aid of K~2~CO~3~ under mild conditions with moderate to high yields. © 2008 Wiley Peri