Title

The Solid State 13C-NMR and 19F-NMR Spectra of Some Graphite Fluorides

Document Type

Article

Language

eng

Publication Date

11-1979

Publisher

Elsevier

Source Publication

Journal of Solid State Chemistry

Source ISSN

0022-4596

Abstract

The solid state 13C nuclear magnetic resonance spectra of fluorinated graphites show two resonances, one of which is assigned to aromatic carbon and the other to aliphatic carbon. The resonances are very broad with the high-field resonance centered at about 35 ppm below tetramethylsilane (TMS) and a low-field resonance centered at about 160 ppm below tetramethylsilane. The high-field resonance is typical of an sp3-like carbon and the low-field resonance is assigned to sp2-like carbons. It is found that the aromatic resonance in graphite decreases with an increase in fluorination of the graphite fluorides examined in this study. The 19F nuclear magnetic resonance spectra of C4F and CF1 each show one resonance. The fluorine resonance in C4F is 180 ppm above CFCI3 whereas the fluorine resonance in CF1 is 55 ppm above CFCI3. These peaks are in the range for fluorine bonded to aromatic and aliphatic carbons, respectively.

Comments

Journal of Solid State Chemistry, Vol. 30, No. 2 (November 1979): 197-201. DOI.

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