ENDOR study of nitrogen hyperfine and quadrupole tensors in vanadyl porphyrins of heavy crude oil
Abstract
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.
Supporting agencies: The work is financially supported by the Program of the competitive growth of Kazan Federal University among the World scientific centers “5-100” and RFBR grant No. 16-33-60085 mol_dk.
About the Authors
I. N. Gracheva
Kazan Federal University
Russian Federation
Russian Federation
Kremlevskaya 18, Kazan 420008
M. R. Gafurov
Kazan Federal University
Russian Federation
Russian Federation
Kremlevskaya 18, Kazan 420008
G. V. Mamin
Kazan Federal University
Russian Federation
Russian Federation
Kremlevskaya 18, Kazan 420008
T. B. Biktagirov
Kazan Federal University
Russian Federation
Russian Federation
Kremlevskaya 18, Kazan 420008
A. A. Rodionov
Kazan Federal University
Russian Federation
Russian Federation
Kremlevskaya 18, Kazan 420008
A. V. Galukhin
Kazan Federal University
Russian Federation
Russian Federation
Kremlevskaya 18, Kazan 420008
S. B. Orlinskii
Kazan Federal University
Russian Federation
Russian Federation
Kremlevskaya 18, Kazan 420008
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Review
For citations:
Gracheva I.N., Gafurov M.R., Mamin G.V., Biktagirov T.B., Rodionov A.A., Galukhin A.V., Orlinskii S.B. ENDOR study of nitrogen hyperfine and quadrupole tensors in vanadyl porphyrins of heavy crude oil. Magnetic Resonance in Solids. 2016;18(1):16102 (5 pp.).
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