1H and13C NMR spectrum-structure correlations for a series of polyene compounds

Autor:	N. K. Genkina, V. L. Shugol, L. N. Kurkovskaya
Rok vydání:	1995
Předmět:	Coupling constant Series (mathematics) Solid-state physics Chemistry Nuclear magnetic resonance spectroscopy Polyene Acceptor Inorganic Chemistry chemistry.chemical_compound Crystallography Computational chemistry Materials Chemistry Physical and Theoretical Chemistry Vicinal
Zdroj:	Journal of Structural Chemistry. 36:638-642
ISSN:	1573-8779 0022-4766
DOI:	10.1007/bf02578656
Popis:	Based on the results of NMR studies of series of polyene compounds Ph(CH=CH)nCH=CXY (X, Y are acceptor substituents), it is suggested that the ratio of vicinal spin-spin coupling constants of protons at the neighboring CH=CH and CH-CH bonds of the same chain be used as a criterion for the degree of charge transfer (equalization of bonds). Conditions (n, X, Y) have been determined under which the ratio is minimal.
Databáze:	OpenAIRE
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