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51 V and 59 Co Off‐MAS NMR Spectra: Determination of Quadrupole Coupling, Chemical Shift Anisotropy and Their Relative Orientation
Author(s) -
Hayashi Shigenobu
Publication year - 1996
Publication title -
magnetic resonance in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0749-1581
DOI - 10.1002/(sici)1097-458x(199610)34:10<791::aid-omr971>3.0.co;2-x
Subject(s) - chemistry , quadrupole , anisotropy , spectral line , nmr spectra database , vanadium , magic angle spinning , chemical shift , analytical chemistry (journal) , carbon 13 nmr satellite , nuclear magnetic resonance spectroscopy , nuclear magnetic resonance , inorganic chemistry , fluorine 19 nmr , atomic physics , stereochemistry , optics , physics , organic chemistry , astronomy
Quadrupole coupling and chemical shift anisotropy are of comparable magnitudes in the NMR of quadrupole nuclei of heavy atoms. Magic angle spinning (MAS) and off‐MAS NMR spectra of 51 V and 59 Co nuclei were measured for vanadium(V)–nitrilotriacetate complex, cobalt(0) acetylacetonate and ammonium metavanadate. Spinning sidebands originating from satellite transitions are erased experimentally in the off‐MAS spectra. The patterns of the central transition in the off‐MAS spectra were analysed theoretically and parameters of quadrupole coupling, chemical shift anisotropy and their relative orientation were obtained.