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A Five-Center Redox System: Molecular Coupling of Two Noninnocent Imino-o-benzoquinonato-Ruthenium Functions through a .pi. Acceptor Bridge
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SYSNO ASEP 0332438 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title A Five-Center Redox System: Molecular Coupling of Two Noninnocent Imino-o-benzoquinonato-Ruthenium Functions through a .pi. Acceptor Bridge Title Redox systém s pěti centry: Molekulární spřažení dvou redox aktivních Imino-o-benzochinon-rutheniových funkcí pomocí .pi. akceptorového můstku Author(s) Das, A. K. (DE)
Sarkar, B. (DE)
Fiedler, Jan (UFCH-W) RID, ORCID
Záliš, Stanislav (UFCH-W) RID, ORCID
Hartenbach, I. (DE)
Strobel, S. (DE)
Lahiri, G. K. (IN)
Kaim, W. (DE)Source Title Journal of the American Chemical Society. - : American Chemical Society - ISSN 0002-7863
Roč. 131, č. 25 (2009), s. 8895-8902Number of pages 8 s. Language eng - English Country US - United States Keywords transition metal complexes ; Creuze-Taube ion ; quinone related ligands Subject RIV CF - Physical ; Theoretical Chemistry R&D Projects OC 139 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) KAN100400702 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) OC09043 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) CEZ AV0Z40400503 - UFCH-W (2005-2011) UT WOS 000267631000043 DOI 10.1021/ja901746x Annotation Combining the concepts of noninnocent behavior of metal/ligand entities and the coupling of redox-active moieties via an electronically mediating bridge led to the synthesis and the structural, electrochemical, and spectroscopic characterization of [Cl(Q)Ru(mu-tppz)Ru(Q)Cl](n) where Q(o) is 4,6-di-tert-butyl-N-phenyl-o-iminobenzoquinone and tppz(o) is 2,3,5,6-tetrakis(2-pyridyl)pyrazine, the available oxidation states being Ru-II,Ru-III,Ru-IV, Q(o,center dot-,2-), and tppz(o,center dot-,2-). One-electron transfer steps between the n = (2-) and (4+) states were studied by cyclic voltammetry and by EPR, UV-vis-NIR spectroelectrochemistry for the structurally characterized anti isomer of [Cl(Q)Ru(mu-tppz)Ru(Q)Cl](PF6)(2), 2(PF6)(2), the only configuration obtained... Workplace J. Heyrovsky Institute of Physical Chemistry Contact Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Year of Publishing 2010
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