Host size effect in the complexation of two bis(m-phenylene)-32-crown-10-based cryptands with a diazapyrenium salt

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• 作者：Xichang Zhang ; Chunxi Zhai ; Ning Li ; Ming Liu ; Shijun Li ; Kelong Zhu ; Jinqiang Zhang ; Feihe Huang ; Harry W. Gibson
• 关键词：Host– ; guest system ; Self-assembly ; Inclusion complex ; Cryptand ; Diazapyrenium
• 刊名：Tetrahedron Letters
• 出版年：2007
• 期刊代码：109_00404039
• 类别：ch
• 出版时间：15 October 2007
• 卷：48
• 期：42
• 页码：7537-7541
• 文件大小：418 K

摘要

N,N′-Dimethyl-2,7-diazapyrenium bis(hexafluorophosphate) binds a C₃-symmetric bis(m-phenylene)-32-crown-10-based cryptand more strongly than N,N′-dimethyl-4,4′-bipyridinium bis(hexafluorophosphate) partly because of its better fit in size with the cryptand host cavity, while it binds a relatively smaller pyridyl cryptand less strongly due to its worse fit in size with the cryptand host cavity and the lack of hydrogen bonding to the pyridyl nitrogen atom of the host.