BioNMR - Question from NMRWiki Q&A forum How can I calculate a carbon-proton coupling constant for a molecule?

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nmrlearner

02-04-2011 07:12 PM

How can I calculate a carbon-proton coupling constant for a molecule?

How can I calculate a carbon-proton coupling constant for a molecule?

I'm trying to explain a missing HMBC peak, and having a coupling constant less than 10 Hz would do that nicely. It's a formamidine derivative with a 3 bond correlation N=CHNC The C is a quaternary carbon in a benzene ring. Any help would be appreciated.

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