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Signs of 1H, 19F spin—spin couplings in pentafluorobenzaldehyde

✍ Scribed by Ted Schaefer; Kirk Marat

Publisher
John Wiley and Sons
Year
1981
Tongue
English
Weight
147 KB
Volume
15
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

The signs of the spin–spin coupling constants between the aldehydic proton and the fluorine nuclei in pentafluorobenzaldehyde are negative over four and six formal bonds and positive over five bonds. The opposite signs had been assumed in previous studies of this molecule. The correct signs are necessary for the determination of the conformational and substituent dependence of these coupling parameters.

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