N-Oxides of polychloropyridines.13C NMR study

Autor:	Victor M. Anisimov, A. M. Sipyagin, N. N. Sveshnikov
Rok vydání:	1995
Předmět:	Deuterium NMR Carbon-13 NMR satellite Chemistry Proton NMR Analytical chemistry Phosphorus-31 NMR spectroscopy General Chemistry Nuclear magnetic resonance spectroscopy Fluorine-19 NMR Carbon-13 NMR J-coupling
Zdroj:	Russian Chemical Bulletin. 44:2319-2322
ISSN:	1573-9171 1066-5285
DOI:	10.1007/bf00713601
Popis:	The effect ofN-oxidation of a series of polychloropyridines on13C NMR parameters has been studied. It has been established that inN-oxides of polychloropyridines an electric field through-space effect of theN-oxide group predominates in the shielding of the γ-carbon atom compared to the other carbon atoms. A linear correlation between13C NMR chemical shifts and total charge densities calculated by the MNDO method for the carbon atoms ofN-oxides of polychloropyridines has been found.
Databáze:	OpenAIRE
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