Chemical shielding anisotropy of13C in CH3*CN determined by NMR spectroscopy of the dielectrically oriented molecule
- 10 August 1991
- journal article
- research article
- Published by Taylor & Francis in Molecular Physics
- Vol. 73 (5), 1077-1083
- https://doi.org/10.1080/00268979100101781
Abstract
A successful determination of a shielding anisotropy with electric field NMR is reported for the first time. The nucleus studied is the nitrile 13C in liquid acetonitrile. From 13C frequency changes and 14N quadrupolar splittings upon dielectrical alignment, the chemical shift anisotropy of 13C is found to be 378 ± 20 ppm. The 14N quadrupole coupling constant is obtained from 1H and 14N spectra of the orientated molecule, giving a value of 3·47 ± 0·16 MHz.Keywords
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