G
George K. Fraenkel
Publications - 62
Citations - 4648
George K. Fraenkel is an academic researcher. The author has contributed to research in topics: Hyperfine structure & Electron paramagnetic resonance. The author has an hindex of 37, co-authored 62 publications receiving 4601 citations.
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Journal ArticleDOI
Theory of Linewidths in Electron Spin Resonance Spectra
Jack H. Freed,George K. Fraenkel +1 more
TL;DR: In this article, it was shown that a composite line arising from a set of degenerate nuclear-spin states should, in general, consist of a sum of superimposed lines of Lorentzian shape with different widths rather than a single line with an over-all shape.
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Theoretical Interpretation of Carbon‐13 Hyperfine Interactions in Electron Spin Resonance Spectra
TL;DR: In this paper, a quantitative theory of the isotropic electron−nuclear spin interactions of carbon 13 in pi-electron radicals is presented and applied to the hyperfine splittings observed in the electron spin resonance spectra of these substances.
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Electron Spin Resonance of Electrolytically Generated Nitrile Radicals
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Measurement of g Values in the Electron Spin Resonance Spectra of Free Radicals
TL;DR: In this article, the electron spin resonance spectra of 20 aromatic free radicals with an accuracy which has not previously been attainable was measured and the largest source of error for both absolute and relative measurements resulted from variations in the difference between the magnetic field at the ESR sample and at the proton NMR probe, located just outside the center of the microwave cavity, which was used to measure the field.
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Analysis of the Electron Spin Resonance Spectra of Aromatic Nitrosubstituted Anion Radicals
TL;DR: In this paper, a good quantitative correlation was obtained between the calculated spin densities and the experimental proton hyperfine splittings for most of the compounds studied, and an equation was formulated which gave excellent predictions of the splitting from N14 nuclei in the nitro groups.