Cyanide bridged trinuclear complexes with central metals bearing pyridine ring ligands

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• 作者：Sheng ; T. ; Vahrenkamp ; H.
• 关键词：Trinuclear complexes ; Cyanide bridging ; Structures ; Electrochemistry ; Metal&ndash ; metal interactions
• 刊名：Inorganica Chimica Acta
• 出版年：2004
• 出版时间：April 20, 2004
• 年：2004
• 卷：357
• 期：6
• 页码：1739-1747
• 全文大小：290 K

文摘

Starting from Fe, Mn, Co and Ni precursors with Py, Bpy and Phen ligands 31 new trinuclear cyanide bridged complexes were obtained, in which the units (CO)₅Cr–CN, (CO)₅Mo–CN, (CO)₅W–CN, Cp(CO)₂Fe–CN, Cp(dppe)Fe–CN and Cp(PPh₃)₂Ru–CN occupy the external positions. Structure determinations showed that the central metals display cis- and trans-octahedral as well as tetrahedral ML_n(NC–M^′)₂ coordinations. From the ν(CN) bands in the IR spectra and from the redox potentials of the external organometallic units it can be concluded that the central complex units are electron sinks. This property prevents electronic communication between the two external metal centers.