Visualizing Halogen Bonds in Planar Supramolecular Systems

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• 作者：Jong Keon Yoon ; Won-joon Son ; Kyung-Hoon Chung ; Howon Kim ; Seungwu Han ; Se-Jong Kahng
• 刊名：Journal of Physical Chemistry C
• 出版年：2011
• 出版时间：February 10, 2011
• 年：2011
• 卷：115
• 期：5
• 页码：2297-2301
• 全文大小：892K
• 年卷期：v.115,no.5(February 10, 2011)
• ISSN：1932-7455

文摘

Supramolecular interactions were studied in two planar model systems, 1,5- and 2,6-dibromoanthraquinones, prepared on Au(111) using scanning tunneling microscopy. In both systems, we found rigid triangular structures that consisted of simultaneous halogen bonds and hydrogen bonds, as reported in protein鈭抣igand complexes. We proposed molecular models that were well reproduced by first-principle studies and could be explained by halogen and hydrogen bonds. The distances, angles, and, strengths of the intermolecular bonds were measured in the observed structures, and showed good agreement with existing bulk data.