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Exchange and decomposition reactions of isobutyl iodide with iodine
Author(s) -
Nakashima Masato,
Noyes Richard M.
Publication year - 1969
Publication title -
international journal of chemical kinetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.341
H-Index - 68
eISSN - 1097-4601
pISSN - 0538-8066
DOI - 10.1002/kin.550010405
Subject(s) - chemistry , iodine , hydrogen iodide , iodide , decomposition , inorganic chemistry , reaction rate constant , hydrogen atom abstraction , hydrogen , radiochemistry , kinetics , organic chemistry , physics , quantum mechanics
In the presence of elementary iodine, isobutyl iodide (2‐methyl‐1‐iodopropane) undergoes isotopic exchange and also decomposes with production of additional iodine. Both reactions are approximately first order in isobutyl iodide and half order in iodine molecules. In degassed hexachlorobutadiene at 160°, the rate constants for exchange and decomposition are 7.5 × 10 −6 and 11.4 × 10 −6 (liter/mole) 1/2 sec −1 , respectively. The decomposition is probably initiated by iodine atom abstraction of a β hydrogen atom, but comparison with rates for related compounds indicates that this hydrogen abstraction does not contribute significantly to the mechanism of exchange.