Synthesis, Characterization and Electrochemical Properties of 4,5-Diazafluoren-9-yl or Fluoren-9-yl Terminated Homobimetallic Ruthenium and Osmium Allenylidene, AlkynyI-Allenylidene Complexes  

作　　者：Jinbo Huang Xiaoxi Zhou Qianyi Zhao Shunhua Li Haiping Xia 

机构地区：[1]Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China

出　　处：《Chinese Journal of Chemistry》2017年第4期420-428,共9页中国化学（英文版）

基　　金：This research was supported by the National Natural Science Foundation of China （Nos. 21332002）.

摘　　要：A variety of rigid ruthenium and osmium allenylidene, ruthenium alkynyl-allenylidene complexes have been prepared. These allenylidene complexes were derived from 9-ethynyl-9-fluorenol and 9-hydroxy-9-ethynyl-4,5-diazafluorene in the presence of cis-OsCl2（dppm）2 and cis-RuCl2（dppe）2. The respective products have been fully characterized by 1H, 13C, 31P NMR spectrometry, IR spectrometry, elemental analysis, and UV/Vis spectrophotometry. Moreover, electrochemical studies reveal that the dinuclear complexes display a quasi-reversible redox behavior and a moderate electronic communication between the two metal centers in 8a. UV–vis studies show a remarkable absorption in the region （λmax = 300-700 nm） for these complexes.A variety of rigid ruthenium and osmium allenylidene, ruthenium alkynyl-allenylidene complexes have been prepared. These allenylidene complexes were derived from 9-ethynyl-9-fluorenol and 9-hydroxy-9-ethynyl-4,5-diazafluorene in the presence of cis-OsCl2（dppm）2 and cis-RuCl2（dppe）2. The respective products have been fully characterized by 1H, 13C, 31P NMR spectrometry, IR spectrometry, elemental analysis, and UV/Vis spectrophotometry. Moreover, electrochemical studies reveal that the dinuclear complexes display a quasi-reversible redox behavior and a moderate electronic communication between the two metal centers in 8a. UV–vis studies show a remarkable absorption in the region （λmax = 300-700 nm） for these complexes.

关 键 词：alkynyl-allenylidene complexes metallacumulene diazafluorenyl and fluorenyl group electrochemistry electronic communication 

分 类 号：O614.121[理学—无机化学] O646[理学—化学]