Dynamic frequency shift in the E.S.R. spectra of transition metal ions
- 1 May 1974
- journal article
- research article
- Published by Taylor & Francis in Molecular Physics
- Vol. 27 (5) , 1345-1357
- https://doi.org/10.1080/00268977400101141
Abstract
The factors which determine the electron spin resonance lineshapes and shifts of transition metal complexes in solution are discussed. It is shown that for ions with S > ½ the dynamic frequency shift may have pronounced effects on the E.S.R. lineshapes, and experimental evidence for this effect in complexes of Cr3+, Fe3+ and Gd3+ is presented. A quantitative interpretation of these spectra in terms of a relaxation mechanism due to fluctuation of the quadratic zero field splitting interaction is given.Keywords
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