Journal ArticleDOI
Nuclear magnetic resonance spectra of carbanions—III: Tetraphenylethylene dianion
TLDR
In this article, the PMR spectra of the titled carbanion have been observed well-resolved and suitable for first-order analysis, and excess charges localized in the phenyl rings are estimated from the chemical shifts and compared with those observed in other carbanions.Abstract:
The PMR spectra of the titled carbanion have been observed well-resolved and suitable for first-order analysis. Excess charges localized in the phenyl rings are estimated from the chemical shifts and compared with those observed in other carbanions.read more
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Journal ArticleDOI
Equilibria between Contact and Solvent-Separated Ion Pairs of 1,1-Diphenylethylene Dimer Dianion and Tetraphenylethylene Dianion
TL;DR: In this paper, temperature-dependent 1H NMR chemical shifts of the two title carbanions have been measured in three solvents and with three counter ions in terms of solvent, counter ion, and temperature.
Journal ArticleDOI
Proton and Carbon-13 NMR Study of Dimer Dianions Produced from 1,1-Diphenylethylene Derivatives
TL;DR: In this paper, the results were discussed in terms of two internal rotations around the bonds between the C1 and C2, and the C 1 and Ci atoms, for 1,1-di-p-tolylpropene dimer dianions.
Journal ArticleDOI
An NMR Study of the Carbanions Produced from Triphenylethylene and Its Methyl-Substituted Derivatives
TL;DR: In this paper, the triphenylethylene dianion was characterized by 1H and 13C NMR spectroscopy, which indicated that a rapid rotation exists around the bond at room temperature.
References
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