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

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 t...

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Main Author: Ng, Soon
Format: Article
Published: Royal Society of Chemistry 1971
Subjects:
Q Science (General)
QD Chemistry
Online Access:http://eprints.um.edu.my/25807/
https://doi.org/10.1039/J19710001586
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spelling my.um.eprints.258072021-03-30T04:16:04Z http://eprints.um.edu.my/25807/ H–F Coupling constants and hindered internal rotation in NN-dimethyltrifluoroacetamide Ng, Soon Q Science (General) QD Chemistry 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. Royal Society of Chemistry 1971 Article PeerReviewed 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 https://doi.org/10.1039/J19710001586 doi:10.1039/J19710001586
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic Q Science (General)
QD Chemistry
spellingShingle Q Science (General)
QD Chemistry
Ng, Soon
H–F Coupling constants and hindered internal rotation in NN-dimethyltrifluoroacetamide
description 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.
format Article
author Ng, Soon
author_facet Ng, Soon
author_sort Ng, Soon
title H–F Coupling constants and hindered internal rotation in NN-dimethyltrifluoroacetamide
title_short H–F Coupling constants and hindered internal rotation in NN-dimethyltrifluoroacetamide
title_full H–F Coupling constants and hindered internal rotation in NN-dimethyltrifluoroacetamide
title_fullStr H–F Coupling constants and hindered internal rotation in NN-dimethyltrifluoroacetamide
title_full_unstemmed H–F Coupling constants and hindered internal rotation in NN-dimethyltrifluoroacetamide
title_sort h–f coupling constants and hindered internal rotation in nn-dimethyltrifluoroacetamide
publisher Royal Society of Chemistry
publishDate 1971
url http://eprints.um.edu.my/25807/
https://doi.org/10.1039/J19710001586
_version_ 1696976585314271232
score 13.214268

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