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Conformations of cycloalkenyl radicals: A dynamic EPR study of the cyclohept-4-enyl radical

✍ Scribed by John C. Walton

Publisher
John Wiley and Sons
Year
1988
Tongue
English
Weight
338 KB
Volume
26
Category
Article
ISSN
0749-1581

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✦ Synopsis

Cyclopent-knyl, cyclohex-fenyl and cyclohept-4-enyl radicals were generated and their EPR spectra obtained in solution over a range of temperatures. The spectral data were consistent with a fully planar conformation for cyclopent-knyl radicals and a slightly flattened half-chair conformation for cyclohex-fenyl radicals. Cyclohept-4enyl radicals showed exchange broadening in their EPR spectra which indicated inversion from one chair conformer to another with an Arrhenius activation barrier of 16.5 f 0.3 kJ mol-'.

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