Казанский (Приволжский) федеральный университет, КФУ
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THE DYNAMICS OF THE PLASTICALLY CRYSTALLINE PHASE OF CYANOADAMANTANE REVISITED BY NMR LINE SHAPE ANALYSIS AND FIELD-CYCLING RELAXOMETRY
Форма представленияСтатьи в зарубежных журналах и сборниках
Год публикации2019
Языканглийский
  • Фаткуллин Наиль Фидаиевич, автор
  • Библиографическое описание на языке оригинала Flämig M, Fatkullin N, Rössler E.A., The dynamics of the plastically crystalline phase of cyanoadamantane revisited by NMR line shape analysis and field-cycling relaxometry//Journal of Chemical Physics. - 2019. - Vol.151, Is.22. - Art. № 224507.
    Аннотация The dynamics of cyanoadamantane (CN-ADA) in its plastically crystalline phase encompasses three processes: overall tumbling of the rigidmolecule, rotation around the molecular symmetry axis, and vacancy diffusion. This makes CN-ADA a prototypical case to be studied byfield-cycling as well as by conventional NMR relaxometry. Data are collected from 430 K down to about 4 K and frequencies in the range of10 kHz–56 MHz are covered. The overall tumbling is interpreted as a cooperative jump process preceding along the orthogonal axis of thecubic lattice and exhibiting a temperature independent non-Lorentzian spectral density. Consequently, a master curve is constructed, whichyields model-independent correlation times, which agree well with those reported in the literature. It can be interpolated by a Cole-Davidsonfunction with a width parameterβCD= 0.83. The uniaxial rotation persisting in the glassy crystal (T
    Ключевые слова dynamics of the plastically crystalline phase of cyanoadamantane revisited by NMR line shape analysis and field-cycling relaxometry
    Название журнала Journal of Chemical Physics
    URL https://www.scopus.com/inward/record.uri?eid=2-s2.0-85076571465&doi=10.1063%2f1.5126953&partnerID=40&md5=e2f5c5a26dc3d7deb5e8f69ab7029f08
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