H–F Coupling constants and hindered internal rotation in NN-dimethyltrifluoroacetamide

Ng, Soon (1971) H–F Coupling constants and hindered internal rotation in NN-dimethyltrifluoroacetamide. Journal of the Chemical Society A: Inorganic, Physical, and Theoretical Chemistry. pp. 1586-1589. ISSN 0022-4944, DOI https://doi.org/10.1039/J19710001586.

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Official URL: https://doi.org/10.1039/J19710001586


The 1H n.m.r. spectra of NN-dimethyltrifluoroacetamide which have been recorded in various solvents, exhibit two H-F coupling constants which are believed to arise from different coupling mechanisms. The high-temperature rotationally averaged spectrum shows that the two H-F coupling constants have the same sign. The activation parameters for the hindered internal rotation about the central C-N bond have been redetermined by line-shape analysis of the temperature-dependent high-resolution 1H n.m.r. spectra.

Item Type: Article
Uncontrolled Keywords: H-F coupling constants; NN-dimethyltrifluoroacetamide
Subjects: Q Science > Q Science (General)
Q Science > QD Chemistry
Divisions: Faculty of Science > Department of Chemistry
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 30 Mar 2021 04:16
Last Modified: 30 Mar 2021 04:16
URI: http://eprints.um.edu.my/id/eprint/25807

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