mriselMagnetic Resonance in SolidsMagnetic Resonance in Solids2072-5981Kazan Federal Universitymrisel-182Research ArticleСтатьиMultiple quantum NMR of interacting equivalent spinsFedorovaA. V.

N.N. Semenov av. 1, Chernogolovka 142432

panna@icp.ac.ruFel'dmanE. B.

N.N. Semenov av. 1, Chernogolovka 142432

Institute of Problems of Chemical Physics of RASRussian Federation2009200120241122428Copyright © Fedorova A.V., Fel'dman E.B., 20242024Fedorova A.V., Fel'dman E.B.Fedorova A.V., Fel'dman E.B.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.mrsej.ru/jour/article/view/182

A theory of multiple quantum (MQ) NMR dynamics is developed for systems of interacting equivalent spins (s=1/2). The theory can be applied for the interpretation of both MQ NMR spectra of bullvalene molecules dissolved in nematic liquid crystal solution and MQ NMR of nanopores in an external magnetic field. Numerical realization of the developed approach allows us to investigate MQ NMR dynamics in systems consisting of several hundred spins. The dependence of the MQ NMR coherence intensities on their orders (the profile of MQ coherence) is investigated in many-spin systems. It is shown that the profile is exponential in such systems. We discuss the information which can be extracted from MQ NMR spectra of systems of interacting equivalent spins.

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The authors declare that there are no conflicts of interest present.