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51 V magic angle spinning NMR in VOPO 4 phases
Author(s) -
Siegel Renée,
Dupré Nicolas,
Quarton Michel,
Hirschinger Jérôme
Publication year - 2004
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/mrc.1485
Subject(s) - chemistry , quadrupole , magic angle , magic angle spinning , tensor (intrinsic definition) , carbon 13 nmr satellite , nmr spectra database , nuclear magnetic resonance spectroscopy , nuclear magnetic resonance , crystallography , fluorine 19 nmr , spectral line , atomic physics , stereochemistry , physics , geometry , quantum mechanics , mathematics
Abstract 51 V magic angle spinning NMR was applied to the α II , β and γ phases of VOPO 4 at three magnetic field strengths (4.7, 7.1, and 11.7 T). The 51 V quadrupole and chemical shift tensors were determined by iterative fitting of the NMR lineshapes at the three magnetic field strengths. The applicability of the method is illustrated by comparison with literature data. Although determined chemical shift tensors are completely axially symmetric and of the same magnitude, all studied phases can clearly be distinguished by their quadrupole coupling tensor. Relationships between the 51 V NMR data and structural characteristics such as crystal symmetries are discussed. Copyright © 2004 John Wiley & Sons, Ltd.