Download Electron Spin Resonance: Analysis and Interpretation by P. Rieger PDF

By P. Rieger

This quantity describes in mathematical phrases the extraction of valuable details from ESR spectra as utilized to paramagnetic natural, inorganic and organometalic molecules. content material: Isotropic ESR spectra of natural radicals -- Isotropic spectra of organometallic radicals -- Anisotropic ESR spectra -- ESR kinetic experiences -- ESR Spectra of biradicals, triplet states, and different S> 0.5 structures -- Perturbation idea calculations. summary: This booklet describes in mathematical phrases the extraction of important info from ESR spectra learn more...

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Additional resources for Electron Spin Resonance: Analysis and Interpretation

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K. Fraenkel, J. Am. Chem. , 1963, 85, 683. 17. R. Bolton and A. Carrington, Mol. R. Bolton, J. Chem. , 1964, 41, 2455. 18. G. Feher, Phys. , 1959, 114, 1219. 19. D. H. Englemann, Mol. , 1971, 20, 569. CHAPTER 3 Isotropic Spectra of Organometallic Radicals Most of the information content from ESR spectra of organometallic radicals and coordination complexes comes from dilute single-crystal spectra or frozen solution spectra. Nonetheless, there are some bits of information and applications that come uniquely from isotropic spectra, and we discuss those aspects in this chapter.

3 Are the Gross Features of the Spectrum Consistent with the Model? (A) Compare the number of observed lines with the number expected. If there are more lines than expected, either the model is wrong or there is more than one radical contributing to the spectrum. If the expected and observed numbers are equal, you are in luck – the analysis should be easy. ), there may be accidental superpositions, small amplitude lines buried under large ones, or just poor resolution. The bigger the discrepancy between expected and observed numbers of lines, the less definitive the analysis will be.

3–30 MHz), rate processes that give observable increases in line widths must be fast. Such processes are discussed in detail in Chapter 5. 4 Organic Radical Reactions Sometimes the ESR spectrum obtained when an organic molecule undergoes one-electron oxidation or reduction is not of the expected cation or anion radical. 16 The spectrum from the reduction of benzonitrile is indeed that of [C6H5CN]Àd, but the spectrum resulting from the reduction of FC6H4CN is not that of the expected radical anion.

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