I am working with some molecules having benzotrifluoride and fluorobenzene. In the C13 NMR, some couplings are seen. If you have any good paper on the Carbon-Fluorine coupling and coupling constant, please share it with me. It will be appreciated.
David Stephenson
This is always the first place I look
https://sdbs.db.aist.go.jp/sdbs/cgi-bin/cre_index.cgi
If you go to fluorobenzene (13C) you will see there is coupling to all the carbon positions.
Note these are spectra are quite old and consequently at a very low frequency so on a modern instrument (at higher field) some of the smaller couplings may be not be resolved.
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