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IR, NMR and dielectric characterization of a novel tetramic acid

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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


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