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NMR study of the lithium salts of aniline derivatives

โœ Scribed by Shoichi Ide; Kazuhisa Iwasawa; Akihiro Yoshino; Tadayoshi Yoshida; Kensuke Takahashi

Publisher
John Wiley and Sons
Year
1987
Tongue
English
Weight
385 KB
Volume
25
Category
Article
ISSN
0749-1581

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โœฆ Synopsis

H, 7Li, I3C, and "N NMR spectra were observed for lithium salts of aniline derivatives in THF solutions. The delocalization of excees charge into the phenyl ring of the salts was confirmed from the 'H and 13C chemical shift data in comparison with those of the neutral molecules. Their "N atoms were approximately 40 ppm less shielded comparison with those of the neutral molecules, and these are discussed in terms of hybridization change and electron densities at the nitrogen atoms. The one-bond "N-lH coupling constants of the salts are approximately 55 Hz and are smaller than those of the neutral molecules.

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