An evaluation of the kinetic parameters for the reaction of trifluoromethyl radicals with CH3Cl in the gas phase in the temperature range from 416 to 636 K

✍ Scribed by R. A. Taccone; A. Olleta; O. Salinovich

• Publisher: John Wiley and Sons
• Year: 1993
• Tongue: English
• Weight: 479 KB
• Volume: 25
• Category: Article
• ISSN: 0538-8066
• DOI: 10.1002/kin.550250504

✦ Synopsis

The hydrogen and chlorine atom abstraction reactions from CH3CI by CF3 radicals produced by the photolysis of hexafluoroacetone (HFA) and CF31 were studied relative to the recombination of CF3 radicals:

The Arrhenius parameters obtained in the temperature range 416 to 578 K are: Log k3/k:/*[cm3/* mol-'" s-'"] = (5.39 + 0.10) -(10490 + I50)/@ Log k4/ki"[cm3/2 mol-'/2 s -'/* ] = (4.52 + 0.11) -(13370 + 250)/6

where 0 = 2,303.RT cal mol-' and k2 is the recombination rate constant for the CF3 radicals.

The factors that influence the transfer processes of chlorine and hydrogen are analyzed in a series of reactions of halomethanes with CF3 and CH3 radicals.