About: Spectroscopic study of phenyl- and 4-pyridylmalondialdehydes

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	4-pyridylmalondialdehyde (1) and phenylmalondialdehyde (2) and their potassium salts were investigated by 1H and 13C NMR, Raman and UV spectroscopy. Three forms of 1 and two forms of 2 were found in water or DMSO solution depending on the pH by means of UV, 1H and 13C NMR spectroscopy. For 2 the chemical exchange between two cis-enol tautomers was observed, while the structure of 1 in the solution is zwitterionic. From the UV measurements and potentiometric titrations pK1=1.9 # 0.1, pK2=7.2 # 0,1 for 1and pK=4.0 # 0.2 for 2 were evaluated. For 1 the Raman spectra of solid state and DMSO solution are very similar, while for 2 they differ significantly. Butylamine was used as a model compound for the study of the potential interaction of malondialdehy de with compounds containing amino groups. The effect of addition of butylamine on the spectra of both malondialdehyde derivatives were indistinguishable from that corresponding to protonation-deprotonation processes. 4-pyridylmalondialdehyde (1) and phenylmalondialdehyde (2) and their potassium salts were investigated by 1H and 13C NMR, Raman and UV spectroscopy. Three forms of 1 and two forms of 2 were found in water or DMSO solution depending on the pH by means of UV, 1H and 13C NMR spectroscopy. For 2 the chemical exchange between two cis-enol tautomers was observed, while the structure of 1 in the solution is zwitterionic. From the UV measurements and potentiometric titrations pK1=1.9 # 0.1, pK2=7.2 # 0,1 for 1and pK=4.0 # 0.2 for 2 were evaluated. For 1 the Raman spectra of solid state and DMSO solution are very similar, while for 2 they differ significantly. Butylamine was used as a model compound for the study of the potential interaction of malondialdehy de with compounds containing amino groups. The effect of addition of butylamine on the spectra of both malondialdehyde derivatives were indistinguishable from that corresponding to protonation-deprotonation processes. (en)
Title	Spectroscopic study of phenyl- and 4-pyridylmalondialdehydes Spectroscopic study of phenyl- and 4-pyridylmalondialdehydes (en)
skos:prefLabel	Spectroscopic study of phenyl- and 4-pyridylmalondialdehydes Spectroscopic study of phenyl- and 4-pyridylmalondialdehydes (en)
skos:notation	RIV/60461373:22340/01:00004827!RIV/2004/MSM/223404/N
http://linked.open.../vavai/riv/strany	497;501
http://linked.open...avai/riv/aktivita	Z
http://linked.open...avai/riv/aktivity	Z(MSM 223400008)
http://linked.open...iv/cisloPeriodika	5
http://linked.open...vai/riv/dodaniDat	2004
http://linked.open...aciTvurceVysledku	Fähnrich, Jan Volka, Karel Havlíček, Jaroslav Matějka, Pavel Král, Vladimír Tkadlecová, Marcela
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	Vysoká škola chemicko-technologická v Praze / Fakulta chemicko-inženýrská
http://linked.open...dnocenehoVysledku	696679
http://linked.open...ai/riv/idVysledku	RIV/60461373:22340/01:00004827
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	4-pyridylmalondialdehyde; phenylmalondialdehyde; UV spectroscopy; NMR spectroscopy; Raman spectroscopy (en)
http://linked.open.../riv/klicoveSlovo	NMR spectroscopy Raman spectroscopy 4-pyridylmalondialdehyde phenylmalondialdehyde UV spectroscopy
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[A95F047E04C1]
http://linked.open...i/riv/nazevZdroje	Journal of Molecular Structure
http://linked.open...in/vavai/riv/obor	CB
http://linked.open...ichTvurcuVysledku	6 (xsd:int)
http://linked.open...cetTvurcuVysledku	6 (xsd:int)
http://linked.open...ocetUcastnikuAkce	0 (xsd:int)
http://linked.open...nichUcastnikuAkce	0 (xsd:int)
http://linked.open...UplatneniVysledku	2001
http://linked.open...v/svazekPeriodika	563-564
http://linked.open...iv/tvurceVysledku	Havlíček, Jaroslav Král, Vladimír Tkadlecová, Marcela Matějka, Pavel Volka, Karel Fähnrich, Jan
http://linked.open...n/vavai/riv/zamer	http://linked.opendata.cz/resource/domain/vavai/zamer/MSM%20223400008
issn	0022-2860
number of pages	5 (xsd:int)
http://localhost/t...ganizacniJednotka	22340

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