Quadruple anionic buckybowls by solid-state chemistry of corannulene and cesium.

Quadruple anionic buckybowls by solid-state chemistry of corannulene and cesium.
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DOI:
10.1021/ja4063103
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发表时间:
2013-08-28
影响因子:
15
通讯作者:
Ernst KH
Ernst KH
中科院分区:
化学1区
文献类型:
--
作者:
Bauert T;Zoppi L;Koller G;Siegel JS;Baldridge KK;Ernst KH

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巴基碗corannulene是一个很好的电子受体。紫外光电子能谱研究进行了薄膜系统含有corannulene和铯。在100 K的铜(111)衬底上沉积的厚Cs膜上,在100 K的真空中吸附亚单层量的corannulene,诱导每个分子四个电子转移到两个最低的未占轨道。铯膜顶部的厚角轮烯层的退火导致形成由与四个Cs+离子配位的C20 H104-离子组成的稳定膜。第一性原理计算显示,作为最稳定的配置,四个Cs+离子夹在两个corannulene碗。
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 C20H104– ions coordinated to four Cs+ ions. First-principles calculations reveal, as the most stable configuration, four Cs+ ions sandwiched between two corannulene bowls.
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