[U. of Ottawa NMR Facility Blog] Isotope Effects and the 19F - 13C HMQC Spectrum of Trifluoroacetic Acid
Isotope Effects and the 19F - 13C HMQC Spectrum of Trifluoroacetic Acid
The 19F - 13C HMQC spectrum of trifluoroacetic acid is shown in the figure below.
http://4.bp.blogspot.com/-roN1Zav9lO8/UIWplTlt8WI/AAAAAAAAA-o/G0N2j7vkqns/s400/tfa1.jpg
The data were collected with a delay appropriate for a 19F - 13C J coupling constant between the 1JF-C coupling constant of 284 Hz and the 2JF-C coupling constant of 44 Hz. The top and side traces are the one-pulse 19F and 13C spectra, respectively. Why are the HMQC responses not at the same 19F chemical shift and why aren't they correlated...
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10-22-2012 09:07 PM
[NMR images] Nucleic acid and protein NMR
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Nucleic acid and protein NMR
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31P NMR of phosphinic acid.jpg
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31P NMR of phosphinic acid.jpg
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