Single Two-Electron Transfers and Successive One-Electron Transfers in Biferrocenyl鈭扞ndacene Isomers

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• 作者：Alessandro Donoli ; Annalisa Bisello ; Roberta Cardena ; Franco Benetollo ; Alberto Ceccon ; Saverio Santi
• 刊名：Organometallics
• 出版年：2011
• 出版时间：March 14, 2011
• 年：2011
• 卷：30
• 期：5
• 页码：1116-1121
• 全文大小：825K
• 年卷期：v.30,no.5(March 14, 2011)
• ISSN：1520-6041

文摘

Novel biferrocenyl complexes of s- and as-dihydroindacenes have been prepared and the charge transfer properties of their mono- and dicationic derivatives, selectively generated by one-electron and two-electron oxidation, have been investigated. Mixed-valence cations are generated by chemical oxidation using acetylferricinium as an oxidant agent and monitored in the visible, IR, and near-IR regions. The IT bands in the near-IR spectra are rationalized in the framework of Marcus鈭扝ush theory. The rigid and planar indacene platform bonded to two terminal redox groups displays a redox chemistry that can be switched from single two-electron transfers to two successive one-electron transfers by changing the supporting electrolyte from nBu₄NPF₆ to nBu₄NB(C₆F₅)₄.