Quadruple Anionic Buckybowls by Solid-State Chemistry of Corannulene and Cesium

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• 作者：Tobias Bauert ; Laura Zoppi ; Georg Koller ; Jay S. Siegel ; Kim K. Baldridge ; Karl-Heinz Ernst
• 刊名：Journal of the American Chemical Society
• 出版年：2013
• 出版时间：August 28, 2013
• 年：2013
• 卷：135
• 期：34
• 页码：12857-12860
• 全文大小：262K
• 年卷期：v.135,no.34(August 28, 2013)
• ISSN：1520-5126

文摘

The buckybowl corannulene is known to be an excellent electron acceptor. UV photoelectron spectroscopy studies were performed with thin-film systems containing corannulene and cesium. Adsorption of submonolayer quantities of corannulene in ultrahigh vacuum onto thick Cs films, deposited at 100 K on a copper(111) substrate, induces a transfer of four electrons per molecule into the two lowest unoccupied orbitals. Annealing of thick corannulene layers on top of the cesium film leads to the formation of a stable film composed of C₂₀H₁₀^{4鈥?/sup> ions coordinated to four Cs+ ions. First-principles calculations reveal, as the most stable configuration, four Cs+ ions sandwiched between two corannulene bowls.}