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Ce-IV- and Light-Driven Water Oxidation by [Ru(terpy)(pic)(3)](2+) Analogues : Catalytic and Mechanistic Studies
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- Duan, Lele (author)
- KTH,Organisk kemi
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- Xu, Yunhua (author)
- KTH,Organisk kemi
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- Tong, Lianpeng (author)
- KTH,Organisk kemi
- show more...
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- (creator_code:org_t)
- 2010-11-18
- 2011
- English.
- In: CHEMSUSCHEM. - : Wiley. - 1864-5631. ; 4:2, s. 238-244
- Journal article (peer-reviewed)
Abstract
Subject headings
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- A series of mononuclear ruthenium polypyridyl complexes [Ru(Mebimpy)(pic)(3)](PF6)(2) (2; Mebimpy=2,6-bis(1-methylbenzimidazol-2-yl)pyridine; pic=4-picoline), Ru(bimpy)(pic)(3) (3; H(2)bimpy=2,6-bis(benzimidazol-2-yl)pyridine), trans-[Ru(terpy)-(pic)(2)Cl](PF6) (4; terpy=2,2';6',2 ''-terpyridine), and trans-[Ru(terpy)(pic)(2)(OH2)](ClO4)(2) (5) are synthesized and characterized as analogues of the known Ru complex, [Ru(terpy)(pic)(3)](PF6)(2) (1). The effect of the ligands on electronic and catalytic properties is studied and discussed. The negatively charged ligand, bimpy(2-), has a remarkable influence on the electrochemical events due to its strong electron-donating ability. The performance in light- and Ce-IV-driven (Ce-IV=Ce(NH4)(2)(NO3)(6)) water oxidation is successfully demonstrated. We propose that ligand exchange between pic and H2O occurs to form the real catalyst, a Ru-aqua complex. The synthesis and testing of trans[Ru(terpy)(pic)(2)(OH2)](ClO4)(2) (5) confirmed our proposal. In addition, complex 5 possesses the best catalytic activity among these five complexes.
Subject headings
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
Keyword
- electrochemistry
- homogeneous catalysis
- photochemistry
- ruthenium
- water chemistry
- Chemistry
- Kemi
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- ref (subject category)
- art (subject category)
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- Xu, Yunhua
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- Sun, Licheng
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- Royal Institute of Technology
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