ISSN:
0030-4921
Keywords:
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
The 19F NMR spectra of mono- and difluoroacetamide are used to derive the activation parameters for rotation about the C—N bond; it is not possible to obtain useful results for trifluoroacetamide. A total line shape analysis is used.Unusually large deuterium isotope effects upon the shielding of the 19F nucleus are observed for N-deuterated derivatives. The magnitude of the isotope effect is different for mono-, di- and trifluoroacetamides, and in the mono-deuterated species the isotope effect is different for cis and trans rotational isomers.
Additional Material:
2 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/mrc.1270040412
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