About: Characterization of Polyphenols from Plant Materials through Their Silylation and 29Si NMR Spectroscopy - Line Assignment through 29Si, 13C Spin-Spin Couplings

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Line ve spektrech lze přiřadit pomocí malých spin-spinových interakcí přes více vazeb . K jejich stanovení slouží autory dříve navržená metoda. (cs) The lines in 29Si NMR spectra of silylated polyphenols and some other compounds are difficult to assign owing to the absence of couplings with protons outside the silyl group. The assignment can be derived through small nJ(29Si, 13C) couplings (n > 1). Using a previously described method for measurements of these couplings, the assignment procedure is demonstrated here on three examples of trimethylsilylated phenols: 7-hydroxyflavone, ferulic acid, and quercetin. In some cases the procedure can be used to identify carbon atoms to which the siloxy groups are attached. The lines in 29Si NMR spectra of silylated polyphenols and some other compounds are difficult to assign owing to the absence of couplings with protons outside the silyl group. The assignment can be derived through small nJ(29Si, 13C) couplings (n > 1). Using a previously described method for measurements of these couplings, the assignment procedure is demonstrated here on three examples of trimethylsilylated phenols: 7-hydroxyflavone, ferulic acid, and quercetin. In some cases the procedure can be used to identify carbon atoms to which the siloxy groups are attached. (en)
Title	Characterization of Polyphenols from Plant Materials through Their Silylation and 29Si NMR Spectroscopy - Line Assignment through 29Si, 13C Spin-Spin Couplings Characterization of Polyphenols from Plant Materials through Their Silylation and 29Si NMR Spectroscopy - Line Assignment through 29Si, 13C Spin-Spin Couplings (en) Charakterizace polyfenolů z rostlinných materoálů po jejich silylaci pomocí ěíSi NMR spektroskopie. Přiřazení linií pomocí 29Si, 13C spin-spinových interakcí (cs)
skos:prefLabel	Characterization of Polyphenols from Plant Materials through Their Silylation and 29Si NMR Spectroscopy - Line Assignment through 29Si, 13C Spin-Spin Couplings Characterization of Polyphenols from Plant Materials through Their Silylation and 29Si NMR Spectroscopy - Line Assignment through 29Si, 13C Spin-Spin Couplings (en) Charakterizace polyfenolů z rostlinných materoálů po jejich silylaci pomocí ěíSi NMR spektroskopie. Přiřazení linií pomocí 29Si, 13C spin-spinových interakcí (cs)
skos:notation	RIV/67985858:_____/05:00029075!RIV06-AV0-67985858
http://linked.open.../vavai/riv/strany	829;834
http://linked.open...avai/riv/aktivita	Z
http://linked.open...avai/riv/aktivity	Z(AV0Z40720504)
http://linked.open...iv/cisloPeriodika	10
http://linked.open...vai/riv/dodaniDat	2006
http://linked.open...aciTvurceVysledku	Cuřínová, Petra Schraml, Jan Blechta, Vratislav Sýkora, Jan Soukupová, Ludmila
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav chemických procesů AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	515026
http://linked.open...ai/riv/idVysledku	RIV/67985858:_____/05:00029075
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	line assignment; long-range couplings; polyphenols (en)
http://linked.open.../riv/klicoveSlovo	polyphenols line assignment long-range couplings
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[BCB06A7E46A3]
http://linked.open...i/riv/nazevZdroje	Magnetic Resonance in Chemistry
http://linked.open...in/vavai/riv/obor	CF
http://linked.open...ichTvurcuVysledku	5 (xsd:int)
http://linked.open...cetTvurcuVysledku	7 (xsd:int)
http://linked.open...UplatneniVysledku	2005
http://linked.open...v/svazekPeriodika	43
http://linked.open...iv/tvurceVysledku	Cuřínová, Petra Schraml, Jan Sýkora, Jan Blechta, Vratislav Soukupová, Ludmila Lachman, J. Proněk, D.
http://linked.open...n/vavai/riv/zamer	Investigation of multiphase reacting systems for the design of processes important in synthesis and preparation of novel materials, in energy production and in environmental protection
issn	0749-1581
number of pages	6 (xsd:int)
is http://linked.open...avai/riv/vysledek of	Characterization of Polyphenols from Plant Materials through Their Silylation and 29Si NMR Spectroscopy - Line Assignment through 29Si, 13C Spin-Spin Couplings

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