The electron spin resonance spectrum of CH3ĊH(CO2H) between 100°K and 200°K
- 1 March 1962
- journal article
- research article
- Published by Taylor & Francis in Molecular Physics
- Vol. 5 (2), 115-120
- https://doi.org/10.1080/00268976200100121
Abstract
The electron spin resonance spectra of CH3ĊH(CO2H) in γ-irradiated α-alanine between 100°k and 200°k differ from the spectra obtained above and below this range. The ‘intermediate temperature’ spectra are interpreted in terms of a rather critical rate of rotation of the methyl group. From the line-width change near 100°k and 200°k an estimate of approximately 4 kcals has been made for the activation energy hindering the rotation of the methyl group.Keywords
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