Kazan (Volga region) Federal University, KFU
KAZAN
FEDERAL UNIVERSITY
 
USING THE INTRAMOLECULAR CONTRIBUTION TO THE SECOND MOMENT OF NMR LINE SHAPE TO DETECT SITE SYMMETRY BREAKDOWN IN MOLECULAR CRYSTALS
Form of presentationArticles in international journals and collections
Year of publication2015
Языканглийский
  • Bashirov Ferid Israfilovich, author
  • Gaysin Nail Kivamovich, author
  • Bibliographic description in the original language Ferid Bashirov and Nail Gaisin, “Using the Intramolecular Contribution to the Second Moment of NMR Line Shape to Detect Site Symmetry Breakdown in Molecular Crystals,” International Journal of Spectroscopy, vol. 2015, Article ID 701386, 6 pages, 2015. doi:10.1155/2015/701386
    Annotation A new approach to simulating the intramolecular contribution to the anisotropic secondmoment of NMR spectral lines broadened by magnetic dipole-dipole interaction of nuclei is suggested. The extended angular jump model is used by approximating the local hindered molecular motion (HMM). The theoretical result allow describing the site symmetry distortion by new experimental parameters 𝑞𝛼, the dynamic weights of irreducible representations of the HMM crystallographic point symmetry group. The application of the theory to describing the intraionic second moment of the proton NMR spectral line in monocrystalline ammonium chloride proves the tetragonal distorted tetrahedral site symmetry of ammonium ions.
    Keywords Second moment, line shape, hindered molecular motion, structure distortion, dipol-dipol interaction
    The name of the journal INTERNATIONAL JOURNAL OF SPECTROSCOPY
    URL http://dx.doi.org/10.1155/2015/701386
    Please use this ID to quote from or refer to the card https://repository.kpfu.ru/eng/?p_id=123125&p_lang=2
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