Synthesis, Characterization, and Electrochemical Properties of Diruthenium Complexes Bridged by Anthraquinones

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• 作者：Fei Li ; Jie Cheng ; Xiaohong Chai ; Shan Jin ; Xianghua Wu ; Guang-Ao Yu ; Sheng Hua Liu ; George Z. Chen
• 刊名：Organometallics
• 出版年：2011
• 出版时间：April 11, 2011
• 年：2011
• 卷：30
• 期：7
• 页码：1830-1837
• 全文大小：901K
• 年卷期：v.30,no.7(April 11, 2011)
• ISSN：1520-6041

文摘

We have prepared four isomeric binuclear ruthenium complexes, in which two ruthenium units have been attached to the 1,4- (4a), 1,5- (4b), 1,8- (4c), or 2,6-positions (4d) of a central anthraquinone (Aq) moiety, leading to packed (4c) or extended (4a,b,d) topologies. All of these bimetallic complexes were fully characterized by elemental analysis, ¹H, ¹³C{¹H}, and ³¹P NMR{¹H} spectrometry, and UV/vis spectrophotometry. Moreover, the structures of 4a,b were established by X-ray crystallography. The electrochemical properties of the stable binuclear ruthenium complexes 4a鈭?b>d were investigated, revealing that the two metal centers in 4a鈭?b>c could interact with each other through an anthraquinone bridge, suggesting that the electron-withdrawing carbonyl chain actually functions as an effective bridge.