EPR SPECTRA OF V(IV) COMPLEXES AND THE STRUCTURE OF OIL PORPHYRINS
L. G. Gilinskaya
Keywords: structure of porphyrins, vanadyl ion complexes, EPR spectra, natural bitumoid fractions
Pages: 259-268
Abstract
For natural bitumoids, the effects of the structure of vanadyl-porphyrin complexes on the EPR spectra were investigated. The ambiguity of the hyperfine structure (its presence or absence) corresponding to four nitrogen atoms in the spectra of oil vanadyl porphyrins correlates with the changes in the second coordination sphere of the nearest environment of the metal ion, namely, in methine bridges.
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