Kinetics of decomposition of chemically activated alkyl fluorides

Abstract

Activated alkyl fluorides have been made (a) by the reactions of suitable radicals with fluorine, (b) by the combination of radicals, (c) by the insertion of methylene into fluorinated alkanes. The rates of elimination of hydrogen halide have been compared with the rates of stabilization by collision for C₂H₅F, n-C₃H₇F, iso-C₃H₇F, s-C₄H₉F, t-C₄H₉F, CH₂FCH₂F, CH₃CHF₂, CH₃CF₂CH₃,CH₃CH₂CHF₂, CHF₂CHF₂, CH₂CICH₂F, CH₃CHCIF and CH₃CCIF₂. The rates have been studied over a range of temperature for six compounds. The results can be interpreted by the RRK treatment but a RRKM treatment is desirable. The stepwise deactivation of n-alkyl fluorides is considered.