Synthesis and Electrochemical Studies of Porphyrin Dimers Linked by Metallocarbenes

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• 作者：Julien Haumesser ; Jean-Paul Gisselbrecht ; Lydia Karmazin-Brelot ; Corinne Bailly ; Jean Weiss ; Romain Ruppert
• 刊名：Organometallics
• 出版年：2014
• 出版时间：September 22, 2014
• 年：2014
• 卷：33
• 期：18
• 页码：4923-4930
• 全文大小：494K
• ISSN：1520-6041

文摘

The functionalization of porphyrins at the meso positions by azoles led, after subsequent alkylation, to several precursors of N-heterocyclic carbenes. Porphyrin dimers linked by palladium (or rhodium) bis-carbene spacers were prepared and characterized. Spectroscopic data and X-ray structures showed that the coordination geometry for the two carbenes around the palladium linker was trans-anti. Electrochemical studies revealed significant electronic communication between the two porphyrins, despite the absence of conjugation pathways.