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Article: Structure-Dependent Electrochemical Behavior of Thienylplatinum(II) Complexes of N,N-Heterocycles

TitleStructure-Dependent Electrochemical Behavior of Thienylplatinum(II) Complexes of N,N-Heterocycles
Authors
KeywordsHeterocycles
Thin films
Platinum
N ligands
Cyclic voltammetry
Issue Date2004
Citation
European Journal of Inorganic Chemistry, 2004, n. 1, p. 69-77 How to Cite?
Abstracttrans- [Pt(MeCN)(PPh3)2(2-thienyl)]BF4 (1) serves as a convenient precursor to bifunctional mononuclear trans-[Pt(PPh 3)2(η1-N-N)(2-thienyl)]BF4 [N-N = pyrazine (2); 2-chloropyrazine, (3)] and dinuclear trans,trans-[Pt 2(PPh3)4(μ-N-N)(2-thienyl) 2](BF4)2 [(N-N = 4,4′-bipyridine (4); 4,4′-vinylenedipyridine (5)] complexes. The nuclear selectivity is conveniently controlled by the choice of the heterocyclic ligands or spacers. Both structural types 3 and 5 were confirmed by single-crystal X-ray crystallographic analyses. Their solution identities were established by positive-ion Electrospray Mass Spectrometry (ESMS). The electroactivities of these complexes were studied by cyclic voltammetry (CV). Continuous CV scans of 4 and 5 revealed variations in the redox waves with the number of scans. While the initial oxidative scan exhibited only a broad, irreversible wave, further cycling showed the growth of two additional redox couples up to about the tenth cycle. The peak currents of these redox couples began to decay with prolonged potential cycling beyond the tenth cycle. These findings are consistent with the formation of electroactive oligomers/polymers, and this conclusion is supported by visible thin film formation on the electrodes. In contrast, the mononuclear complexes (2 and 3) do not show such behavior. The films formed were further studied by repetitive potential cycling and XPS. © Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004.
Persistent Identifierhttp://hdl.handle.net/10722/219817
ISSN
2015 Impact Factor: 2.686
2015 SCImago Journal Rankings: 1.018

 

DC FieldValueLanguage
dc.contributor.authorZhao, Feng-
dc.contributor.authorXu, Xingling-
dc.contributor.authorKhoo, Soo Beng-
dc.contributor.authorHor, T. S Andy-
dc.date.accessioned2015-09-23T02:58:01Z-
dc.date.available2015-09-23T02:58:01Z-
dc.date.issued2004-
dc.identifier.citationEuropean Journal of Inorganic Chemistry, 2004, n. 1, p. 69-77-
dc.identifier.issn1434-1948-
dc.identifier.urihttp://hdl.handle.net/10722/219817-
dc.description.abstracttrans- [Pt(MeCN)(PPh3)2(2-thienyl)]BF4 (1) serves as a convenient precursor to bifunctional mononuclear trans-[Pt(PPh 3)2(η1-N-N)(2-thienyl)]BF4 [N-N = pyrazine (2); 2-chloropyrazine, (3)] and dinuclear trans,trans-[Pt 2(PPh3)4(μ-N-N)(2-thienyl) 2](BF4)2 [(N-N = 4,4′-bipyridine (4); 4,4′-vinylenedipyridine (5)] complexes. The nuclear selectivity is conveniently controlled by the choice of the heterocyclic ligands or spacers. Both structural types 3 and 5 were confirmed by single-crystal X-ray crystallographic analyses. Their solution identities were established by positive-ion Electrospray Mass Spectrometry (ESMS). The electroactivities of these complexes were studied by cyclic voltammetry (CV). Continuous CV scans of 4 and 5 revealed variations in the redox waves with the number of scans. While the initial oxidative scan exhibited only a broad, irreversible wave, further cycling showed the growth of two additional redox couples up to about the tenth cycle. The peak currents of these redox couples began to decay with prolonged potential cycling beyond the tenth cycle. These findings are consistent with the formation of electroactive oligomers/polymers, and this conclusion is supported by visible thin film formation on the electrodes. In contrast, the mononuclear complexes (2 and 3) do not show such behavior. The films formed were further studied by repetitive potential cycling and XPS. © Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004.-
dc.languageeng-
dc.relation.ispartofEuropean Journal of Inorganic Chemistry-
dc.subjectHeterocycles-
dc.subjectThin films-
dc.subjectPlatinum-
dc.subjectN ligands-
dc.subjectCyclic voltammetry-
dc.titleStructure-Dependent Electrochemical Behavior of Thienylplatinum(II) Complexes of N,N-Heterocycles-
dc.typeArticle-
dc.description.natureLink_to_subscribed_fulltext-
dc.identifier.scopuseid_2-s2.0-1642471711-
dc.identifier.issue1-
dc.identifier.spage69-
dc.identifier.epage77-

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