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Synthesis,reactivity and electrochemical properties of substituted cyclopentadienyl cobalt (Ⅲ) complexes
引用本文:侯秀峰,庞震,徐友锋,蔡瑞芳,黄祖恩.Synthesis,reactivity and electrochemical properties of substituted cyclopentadienyl cobalt (Ⅲ) complexes[J].中国化学,2000(5).
作者姓名:侯秀峰  庞震  徐友锋  蔡瑞芳  黄祖恩
作者单位:Department of Chemistry,Fudan University,Shanghai 200433,China,Department of Chemistry,Fudan University,Shanghai 200433,China,Department of Chemistry,Fudan University,Shanghai 200433,China,Department of Chemistry,Fudan University,Shanghai 200433,China,Department of Chemistry,Fudan University,Shanghai 200433,China
基金项目:Project (No. 29771008) supported by the National Natural Science Foundation of China,A research grant from the State Educational Committee of China,a Fudan University Faculty Research Grant for partial support of this work are greatly acknowledged. Tif
摘    要:Cyclopentadienyl cobalt complexes (n5-C5H4R)CoLI2 L = CO,R=-COOCH2CH=CH2 (3); L=PPh3,R=-COOCH2-CH=CH2 (6); L= P(p-C6H4CH3)3,R=-COOC(CH3) = CH2 (7),-COOCH2C6H5(8),-COOCH2CH = CH2 (9)] were prepared and characterized by elemental analyses,1H NMR,IR and UV-vis spectra.The reaction of complexes (n5-C5H4R)CoLI2L=CO,R=-COOC(CH3)=CH2 (1) ,-COOCH2C6H5(2):L=PPh3,R =-COOC(CH3)=CH2 (4),-COOCH2C6H5(5)] with Na-Hg resulted in the formation of their corresponding substituted cobaltocene (n5-C5H4R)2Co R= -COOC(CH3) = CH2 (10),-COOCH2C6H5 (11) ].The electrochemical properties of these complexes 1-11 were studied by cyclic voltammetry.It was found that as the ligand (L) of the cobalt (Ⅲ) complexes changing from CO to PPh3 and P(p-tolyl)3,their oxidation potentials increased gradually.The cyclic voltammetry of α,α'-substituted cobaltocene showed reversible oxidation of one electron pro-

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