Synthesis,crystal structures and complexing ability of difunctionalized copillar[5]arene Schiff bases |
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Authors: | Chang-Bo Yin Ying Han Gui-Fei Huo Jing Sun Chao-Guo Yan |
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Institution: | College of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou 225002, China |
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Abstract: | An efficient method for the synthesis of some difunctionalized copillar5]arene Schiff bases from condensation of salicylaldehyde and its 5-chloro, 5-bromo, 3,5-di(t-butyl) substituted derivatives with corresponding diamino-functionalized copillar5]arene, which were prepared by Gabriel reaction according to the reported method. Single-crystals of six copillar5]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 pillar5]arene. Furthermore, the complexing ability of these Schiff bases to transition metal ions were investigated by UV and fluorescence spectroscopy. |
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Keywords: | Pillar[5]arene Schiff base Metal complex Single crystal structure Fluorescence |
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