, Volume 49, Issue 2, pp 245-254,
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EPR spectra of V(IV) complexes and the structure of oil porphyrins

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.

Original Russian Text Copyright © 2008 by L. G. Gilinskaya
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Translated from Zhurnal Strukturnoi Khimii, Vol. 49, No. 2, pp. 259–268, March–April, 2008.