✦ LIBER ✦

Reaction of hot H atoms with CDCl3

✍ Scribed by Philip L. Gould; Geoffrey A. Oldershaw

Publisher: John Wiley and Sons
Year: 1982
Tongue: English
Weight: 383 KB
Volume: 14
Category: Article
ISSN: 0538-8066
DOI: 10.1002/kin.550141004

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✦ Synopsis

Abstract

Energetic hydrogen atoms generated by photolysis of HBr or HI react with CDCl~3~ by abstracting either a deuterium atom (1) or a chlorine atom (2):
equation image
The integral probability of reaction (2) has been measured for several defined initial translational energies of H^*^, and the phenomenological threshold energy is 31 ± 14 kJ/mol. For initial translational energies in the range of 66–121 kJ/mol, the ratio of the integral probabilities of Cl abstraction and of D abstraction, when normalized to equal numbers of Cl and D atoms, is 2.4 ± 0.3. The interpretation of the integral reaction probabilities in terms of the excitation functions of reactions (1) and (2) is discussed. Measurements of the moderating effect of CO~2~ on reactions (1) and (2) show that CDCl~3~ is slightly more effective than CO~2~ as a moderator of H atoms in the energy range of 90–30 kJ/mol.

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