Determination of the stabilization energy of the cyclopropylmethyl radical by EPR spectroscopy

John C. Walton*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

34 Citations (Scopus)

Abstract

Cyclopropylmethyl radicals were generated from cyclopropylmethyl bromide and studied at low temperatures by EPR spectroscopy. From the exchange broadening in the spectra the internal rotation barrier about the C‐β‐C‐α. bond was found to be 11.5±0.8 kJ mol−1. Hence, the stabilization energy of the cyclopropylmethyl radical is 10±2.3 kJ mol−1 and DH° (cyclopropylmethyl‐H) = 400 kJ mol−1. The radical's structure, conformation and C‐β‐C‐α. rotation barrier were calculated by the semi‐empirical MNDO‐UHF method.

Original languageEnglish
Pages (from-to)998-1000
Number of pages3
JournalMagnetic Resonance in Chemistry
Volume25
Issue number11
DOIs
Publication statusPublished - 1 Jan 1987

Keywords

  • Bond dissociation energy
  • Cyclopropylmethyl
  • EPR
  • Radicals
  • Stabilization energy

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