Abstract

The host-guest interactions modes of fully substituted cyclopentanocucurbit[5]uril (CyP5Q[5]) with p-aminophenol (G1) and p-nitroaniline (G2) were investigated by X-ray single crystal diffraction, 1H NMR spectroscopy, mass spectrometry, infrared spectroscopy and thermogravimetric analysis. The results shows that G1 and G2 interact with CyP5Q[5] to form host-guest complexes, which can enhance the thermal stability of G1 and G2. The crystal structure shows that G1 and G2 act on the carbonyl-fringed portals of CyP5Q[5] via ion-dipole interactions and hydrogen bond interactions, respectively. [ZnCl4]2- ion participates in ion-dipole interactions with the outer surface of CyP5Q[5] to form supramolecular frameworks.

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