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Dynamic behaviour of fluoro-substituted 1,8-diarylnaphthalenes: A 19F,19F and 1,1H 2D EXSY NMR and AM1 computational study

✍ Scribed by Rita Annunziata; Francesco Ponzini; Laura Raimondi

Publisher
John Wiley and Sons
Year
1995
Tongue
English
Weight
919 KB
Volume
33
Category
Article
ISSN
0749-1581

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✦ Synopsis

Interactions between polar groups and zc systems were studied for stacked aryls in l-fluorophenyl-8arylnaphthalenes, in which an 'electron-rich' aryl ring is forced in a stacked geometry with an 'electron-poor' fluorophenyl ring; the rotation process was examined using different NMR techniques (lineshape analysis, 2D EXSY). The AC's obtained when considering 'H and 19F nuclei were perfectly comparable. Semi-empirical calculations (AMl) were performed to evaluate AC'S for the rotation process, and the results are compared with the experimental NMR values.

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