Co(I)-Mediated Removal of Addends on the C60 Cage and Formation of the Monovalent Cobalt Complex CpCo(CO)(η2-C60)

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• 作者：Yoshifumi Hashikawa ; Michihisa Murata ; Atsushi Wakamiya ; Yasujiro Murata
• 刊名：Organic Letters
• 出版年：2016
• 出版时间：December 16, 2016
• 年：2016
• 卷：18
• 期：24
• 页码：6348-6351
• 全文大小：419K
• ISSN：1523-7052

文摘

The removal of addends on the fullerene C₆₀ cage plays an important role in the final stage for synthesizing endohedral fullerenes by the molecular surgery method. We developed a cobalt-mediated reaction to regenerate C₆₀ from N-substituted C₆₀ derivatives (aziridinofullerene and azafulleroid). In these reactions, we found the formation of a green monovalent-cobalt complex of C₆₀, and its structure was unambiguously determined by X-ray analysis. The characteristic electronic structure of this cobalt complex was studied by IR and UV–vis absorption spectroscopy and electrochemical analyses.