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Accession Number:
AD0269724
Title:
A STUDY OF THE HALOGENATION OF ALIPHATIC HYDROCARBONS AND DERIVATIVES THEREOF
Corporate Author:
SHEFFIELD UNIV (ENGLAND)
Report Date:
1961-08-01
Abstract:
Fluorination, chlorination and bromination of the 1- and 2-haloalkanes and related compounds were investigated in the gas phase. Fluorination proved to be the least selective process, bromination the most. A substituent halogen accelerates bromination at the C atom to which substituent is attached, but chlorination is slightly and fluorination strongly retarded at this position. All 3 modes of halogenation are retarded at adjacent sites fluorination being relatively most affected, bromination the least. Experiments were carried out over a range of temperatures and indicate that changes in reactivity observed are due principally to changes in activation energy for H abstraction. These results throw light on the factors controlling H abstraction by free radicals. Radicals of the type -CHXCH- where X is a halogen atom are relatively unstable. Author
Pages:
0001
Contract Number:
AF61 052 63
File Size:
0.00MB
