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The 5‐hexenyl cyclization
Author(s) -
Schmid Peter,
Griller David,
Ingold Keith U.
Publication year - 1979
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.550110309
Subject(s) - chemistry , cyclopropane , radical cyclization , electron paramagnetic resonance , reaction rate constant , solvent , radical , kinetic energy , photochemistry , medicinal chemistry , kinetics , organic chemistry , nuclear magnetic resonance , quantum mechanics , ring (chemistry) , physics
The cyclization of the 5‐hexenyl radical to form the cyclopentylmethyl radical has been reexamined by kinetic EPR spectroscopy at temperatures between 183 and 232°K in cyclopropane solvent. The rate constant, k c for this important radical rearrangement can be represented by\documentclass{article}\pagestyle{empty}\begin{document}$$ \log k_c (\sec ^{ - 1}) = (9.5 \pm 1.1) - (6.1 \pm 1.1)/\theta $$\end{document} where Θ = 2.3 RT kcal/mol.