Magnetic Resonance in Chemistry p. 412 - 415 (1988)
Update date:2022-08-02
Topics:
Walton, John C.
Cyclopent-3-enyl, cyclohex-3-enyl 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-3-enyl radicals and slightly flattened half-chair conformation for cyclohex-3-enyl radicals.Cyclohept-4-enyl 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 +/-0.3 kj/mol. KEY WORDS EPR radicals Cycloalkenyl radicals Ring c onformations.
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