Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.21/4963
Registo completo
Campo DCValorIdioma
dc.contributor.authorNunes, Patrique-
dc.contributor.authorNagy, Nora V.-
dc.contributor.authorAlegria, Elisabete C. B. A.-
dc.contributor.authorPombeiro, Armando J. L.-
dc.contributor.authorCorreia, Isabel-
dc.date.accessioned2015-08-24T14:11:14Z-
dc.date.available2015-08-24T14:11:14Z-
dc.date.issued2014-
dc.identifier.citationNUNES, Patrique; [et al] – The solvation and electrochemical behaviour of Copper acetylacetonate complexes in ionic liquids. Journal of Molecular Structure. ISSN: 0022-2860. Vol. 160 (2014), pp. 142-149por
dc.identifier.issn0022-2860-
dc.identifier.issn1872-8014-
dc.identifier.urihttp://hdl.handle.net/10400.21/4963-
dc.description.abstractThe behavior of copper(II) complexes of pentane-2,4-dione and 1,1,1,5,5,5-hexafluoro-2,4-pentanedione, [Cu(acac)(2) (1) and [Cu(HFacac)(2)(H2O)] (2), in ionic liquids and molecular organic solvents, was studied by spectroscopic and electrochemical techniques. The electron paramagnetic resonance characterization (EPR) showed well-resolved spectra in most solvents. In general the EPR spectra of [Cu(acac)(2)] show higher g(z) values and lower hyperfine coupling constants, A(z), in ionic liquids than in organic solvents, in agreement with longer Cu-O bond lengths and higher electron charge in the copper ion in the ionic liquids, suggesting coordination of the ionic liquid anions. For [Cu(HFacac)(2)(H2O)] the opposite was observed suggesting that in ionic liquids there is no coordination of the anions and that the complex is tetrahedrically distorted. The redox properties of the Cu(II) complexes were investigated by cyclic voltammetry (CV) at a Pt electrode (d = 1 mm), in bmimBF(4) and bmimNTf(2) ionic liquids and, for comparative purposes, in neat organic solvents. The neutral copper(II) complexes undergo irreversible reductions to Cu(I) and Cu(0) species in both ILs and common organic solvents (CH2Cl2 or acetonitrile), but, in ILs, they are usually more easier to reduce (less cathodic reduction potential) than in the organic solvents. Moreover, 1 and 2 are easier to reduce in bmimNTf(2) than in bmimBF(4) ionic liquid. (C) 2013 Elsevier B.V. All rights reserved.por
dc.language.isoengpor
dc.publisherElsevier Science BVpor
dc.rightsclosedAccesspor
dc.subjectCopper complexespor
dc.subjectIonic liquidspor
dc.subjectEPRpor
dc.subjectSalvationpor
dc.subjectVoltammetrypor
dc.titleThe solvation and electrochemical behaviour of Copper acetylacetonate complexes in ionic liquidspor
dc.typearticlepor
dc.peerreviewedyespor
degois.publication.firstPage142por
degois.publication.lastPage149por
degois.publication.titleJournal of Molecular Structurepor
degois.publication.volume160por
dc.relation.publisherversionhttp://www.sciencedirect.com/science/article/pii/S0020169313005252#-
dc.identifier.doi10.1016/j.molstruc.2013.12.025-
Aparece nas colecções:ISEL - Eng. Quim. Biol. - Artigos

Ficheiros deste registo:
Ficheiro Descrição TamanhoFormato 
The solvation and electrochemical behavior.pdf976,12 kBAdobe PDFVer/Abrir    Acesso Restrito. Solicitar cópia ao autor!


FacebookTwitterDeliciousLinkedInDiggGoogle BookmarksMySpace
Formato BibTex MendeleyEndnote 

Todos os registos no repositório estão protegidos por leis de copyright, com todos os direitos reservados.