Magnetic Resonance in Solids (Nov 2016)

ENDOR study of nitrogen hyperfine and quadrupole tensors in vanadyl porphyrins of heavy crude oil

  • Gracheva I.N., Gafurov M.R., Mamin G.V., Biktagirov T.B., Rodionov A.A., Galukhin A.V., Orlinskii S.B.

Journal volume & issue
Vol. 18, no. 1
p. 16102

Abstract

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We report the observation of pulsed electron-nuclear double resonance (ENDOR) spectrum caused by interactions of the nitrogen nuclei 14N with the unpaired electron of the paramagnetic vanadyl complexes VO2+ of vanadyl porphyrins in natural crude oil. We provide detailed experimental and theoretical characterization of the nitrogen hyperfine and quadrupole tensors.