Synthesis, crystal structures and complexing ability of difunctionalized copillar[5]arene Schiff bases

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• 作者：Chang-Bo Yin ; Ying Han ; ^{hanying@yzu.edu.cn} ; Gui-Fei Huo ; Jing Sun ; Chao-Guo Yan ; ^{cgyan@yzu.edu.cn}
• 关键词：Pillar[5]arene ; Schiff base ; Metal complex ; Single crystal structure ; Fluorescence
• 刊名：Chinese Chemical Letters
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：28
• 期：2
• 页码：431-436
• 全文大小：1129 K
• 卷排序：28

文摘

An efficient method for the synthesis of some difunctionalized copillar[5]arene Schiff bases from condensation of salicylaldehyde and its 5-chloro, 5-bromo, 3,5-di(t-butyl) substituted derivatives with corresponding diamino-functionalized copillar[5]arene, which were prepared by Gabriel reaction according to the reported method. Single-crystals of six copillar[5]arenes were determined by X-ray diffraction. An ORTEP of compounds showed that the two chains units of Schiff base exist in the outside of the cavity of pillar[5]arene. Furthermore, the complexing ability of these Schiff bases to transition metal ions were investigated by UV and fluorescence spectroscopy.