کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1327822 | 977507 | 2005 | 8 صفحه PDF | دانلود رایگان |
1,8-Naphthyridine (napy) and terpyridine-analogous (N,N,C) tridentate ligands coordinated ruthenium (II) complexes, [RuL(napy-κ2N,N′) (dmso)](PF6)2 (1: L=L1=N″-methyl-4′-methylthio-2,2′:6′,4″-terpyridinium, 2: L = L2 = N″-methyl-4′-methylthio-2,2′:6′,3″-terpyridinium) were prepared and their chemical and electrochemical properties were characterized. The structure of complex 1 was determined by X-ray crystallographic study, showing that it has a distorted octahedral coordination style. The cyclic voltammogram of 1 in DMF exhibited two reversible ligand-localized redox couples. On the other hand, the CV of 2 shows two irreversible cathodic peaks, due to the Ru–C bond of 2 containing the carbenic character. The IR spectra of 1 in CO2-saturated CH3CN showed the formation of Ru-(η1-CO2) and Ru–CO complexes under the controlled potential electrolysis of the solution at −1.44 V (vs. Fc/Fc+). The electrochemical reduction of CO2 catalyzed by 1 at −1.54 V (vs. Fc/Fc+) in DMF-0.1 M Me4NBF4 produced CO with a small amount of HCO2H.
1,8-Naphthyridine (napy) and (N,N,C) tridentate ligands coordinated ruthenium (II) complexes, [RuL(napy-κ2N,N′)(dmso)](PF6)2 (1: L = N″-methyl-4′-methylthio-2,2prime:6′,4″-terpyridinium, 2: L =N″-methyl-4′-methylthio-2,2′:6′,3″-terpyridinium) were prepared and their electrochemical properties were characterized. The generation of CO from CO2 was observed by IR spectra of 1 in CO2-saturated CH3CN solution under controlled potential reduction conditions.Figure optionsDownload as PowerPoint slide
Journal: Journal of Organometallic Chemistry - Volume 690, Issue 19, 1 October 2005, Pages 4272–4279