Carbon–fluorine two-dimensional NMR correlation spectra

Autor:	Robert J. Webb, Richard A. Newmark
Rok vydání:	2005
Předmět:	Chemistry Organic Chemistry Analytical chemistry chemistry.chemical_element Proton decoupling Biochemistry Spectral line Inorganic Chemistry Heteronuclear molecule Fluorine Carbon–fluorine bond Environmental Chemistry Physical and Theoretical Chemistry Intensity (heat transfer)
Zdroj:	Journal of Fluorine Chemistry. 126:355-360
ISSN:	0022-1139
DOI:	10.1016/j.jfluchem.2004.12.012
Popis:	Direct detection heteronuclear correlation (HETCOR) 13C{19F} and indirect detection gHMQC and gHSQC 19F{13C} two-dimensional correlation spectra have been compared for 1,3-perfluoro dimethylcyclohexane. Correlations to the geminally non-equivalent fluorine atoms in the CF2 groups are more difficult to unambiguously observe using gHMQC or HETCOR in this typical cyclic fluorochemical in which 2JFF ∼ > 1JCF, but they are readily observed and assigned in the gHSQC experiment. Excellent 2D gHSQC 19F{13C} correlation spectra have also been obtained on H(CF2)4CH2OH without proton decoupling, although half of the correlations within the several FH multiplets have zero intensity.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::761afed406ad39eedf589bfbb3f7a821 https://doi.org/10.1016/j.jfluchem.2004.12.012 Zobrazit plný text záznamu Full Text from ScienceDirect