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-diaza...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.展开更多
基金This research was supported by the National Natural Science Foundation of China （Nos. 21332002）.
文摘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.
