IR, NMR and dielectric characterization of a novel tetramic acid

Vassilikou-Dova, A; Kalogeras, IM; Petroliagi, M; Igglessi-Markopoulou, O; Markopoulos, J

dc.contributor.author	Vassilikou-Dova, A	en
dc.contributor.author	Kalogeras, IM	en
dc.contributor.author	Petroliagi, M	en
dc.contributor.author	Igglessi-Markopoulou, O	en
dc.contributor.author	Markopoulos, J	en
dc.date.accessioned	2014-03-01T01:14:44Z
dc.date.available	2014-03-01T01:14:44Z
dc.date.issued	1999	en
dc.identifier.issn	1042-0150	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/13210
dc.subject	Dielectric properties	en
dc.subject	IR	en
dc.subject	NMR	en
dc.subject	Tetramic acid	en
dc.subject.classification	Nuclear Science & Technology	en
dc.subject.classification	Physics, Condensed Matter	en
dc.subject.other	Chemical bonds	en
dc.subject.other	Dielectric properties of solids	en
dc.subject.other	Electric field effects	en
dc.subject.other	Infrared spectroscopy	en
dc.subject.other	Nuclear magnetic resonance spectroscopy	en
dc.subject.other	Phase transitions	en
dc.subject.other	Relaxation processes	en
dc.subject.other	Spectrum analysis	en
dc.subject.other	Structure (composition)	en
dc.subject.other	Tautomers	en
dc.subject.other	Tetramic acid	en
dc.subject.other	Thermally stimulated depolarization currents	en
dc.subject.other	Organic acids	en
dc.title	IR, NMR and dielectric characterization of a novel tetramic acid	en
heal.type	journalArticle	en
heal.identifier.primary	10.1080/10420159908226266	en
heal.identifier.secondary	http://dx.doi.org/10.1080/10420159908226266	en
heal.language	English	en
heal.publicationDate	1999	en
heal.abstract	The structure of the N-acetyl-3-hexanoyl tetramic acid has been elucidated by IR and NMR spectroscopy. The IR spectra showed absorption bands for the CO group of the β-dicarbonyl system CO-CH-CO ↔ C(OH)=C-CO as well as for the carbon-carbon double bond thus verifying the proposed structure. The 1H and 13C NMR spectra confirm the existence of enolic ""internal"" and ""external"" tautomers. The interconversion of ""internal"" tautomers seems to be faster than that of the ""external"" ones. The Thermally Stimulated Depolarization Currents (TSDC) spectrum in the temperature range 10-340 K revealed the presence of two predominant relaxation mechanisms, which are tentatively discussed in terms of the relaxation of tautomeric transformations under the influence of the applied electric field. © 1999 OPA (Overseas Publishers Association) N.V. Published by license under the Gordon and Breach Science Publishers imprint.	en
heal.publisher	GORDON BREACH SCI PUBL LTD	en
heal.journalName	Radiation Effects and Defects in Solids	en
dc.identifier.doi	10.1080/10420159908226266	en
dc.identifier.isi	ISI:000088130800068	en
dc.identifier.volume	150	en
dc.identifier.issue	1-4	en
dc.identifier.spage	409	en
dc.identifier.epage	414	en