Geometry and rotational barriers in 1,3,5-triphenylpentadienyllithium by 1H and 13C nuclear magnetic resonance

Autor:	R. P. Steiner, J. B. Stothers, R. E. Klinck, D. H. Hunter
Rok vydání:	1976
Předmět:	chemistry.chemical_compound Nuclear magnetic resonance chemistry Organic Chemistry Geometry General Chemistry Catalysis Tetrahydrofuran Spectral line Ion
Zdroj:	Canadian Journal of Chemistry. 54:1464-1471
ISSN:	1480-3291 0008-4042
DOI:	10.1139/v76-210
Popis:	Variable temperature studies of 1H and 13C spectra have been employed to establish the geometry of 1,3,5-triphenylpentadienyllithium in tetrahydrofuran solution. These data show that the anion exists in both W and S forms, which are of comparable energy, and interconversion between the two S forms is more rapid than [Formula: see text] This represents one of the few reported measurements of the barrier to rotation about an internal bond in a delocalized carbanion.
Databáze:	OpenAIRE
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