التفاصيل البيبلوغرافية
| العنوان: |
Bimetallic ruthenium complexes bridged by divinylphenylene bearing oligo(ethylene glycol)-methylether: synthesis, (spectro)electrochemistry and the lithium cation effect. |
| المؤلفون: |
Li Yan Tian, Yuan Mei Liu, Guang-Xuan Tian, Xiang Hua Wu, Zhen Li, Jun-Feng Kou, Ya-Ping Ou, Sheng Hua Liu, Wen-Fu Fu |
| المصدر: |
Dalton Transactions: An International Journal of Inorganic Chemistry; 2014, Vol. 43 Issue 10, p4093-4101, 9p |
| مصطلحات موضوعية: |
BIMETALLIC catalysts, RUTHENIUM, ETHYLENE glycol, CHEMICAL synthesis, ELECTROCHEMISTRY, X-ray crystallography, CYCLIC voltammetry |
| مستخلص: |
A series of 1,4-disubstituted ruthenium-vinyl complexes, (E,E)-[{(PMe3)3(CO)ClRu}2(μ-HC=CH-Ar- CH=CH)], in which the 1,4-diethenylphenylene bridge bears two oligo(ethylene glycol)methyl ether side chains at different positions (2,5- and 2,3-positions), were prepared. The respective products were characterized by elemental analyses and NMR spectroscopy. The structures of complexes 1b and 1e were established by X-ray crystallography. The electronic properties of the complexes were investigated by cyclic voltammetry, and IR and UV-vis/NIR spectroscopies. Electrochemical studies showed that the 2,5- substituents better stabilized the mixed-valence states; the electrochemical behavior was greatly affected by lithium cations, especially complex 1g with 2,3-substituents, which was further supported by IR and UV-vis/NIR spectra changes. Spectroelectrochemical studies showed that the redox chemistry was dominated by the non-innocent character of the bridging fragment. [ABSTRACT FROM AUTHOR] |
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