Question from NMRWiki Q&A forum satellite peaks in 19F-NMR spectra

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[Question from NMRWiki Q&A forum] satellite peaks in 19F-NMR spectra

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03-29-2012, 10:11 PM

nmrlearner

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satellite peaks in 19F-NMR spectra

satellite peaks in 19F-NMR spectra

Hello,After reading the Q and A that was dated Oct2011, as an NMR student I ran into a question:

in the answer you read:"The 13C-19F isotope shift can be fairly large, so the satellites wouldn't be symmetric."

13C-19F isotope shift: they mean satellites dues to 13C-19F coupling, right? So if it is so large, they are not symmetric in Hz scale but symmetric in ppm scale? I can't understand this!

I have seen asymmetric small peaks around 19F-spectrum of perfluorohexane. But I guessed they might be due to some other artifacts!

Thanks for the time,Amin

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