Structure of supramolecular assemblies formed by α,δ- tetramethylcucurbit[6]uril and 4-nitrophenol

Abstract

A host-guest assembly, [(C40H44N24O 12)·(C6H5NO3) 8· 13(H2O)] (1), based on a partial substituted cucurbituril, α,δ-tetramethylcucurbit[6]uril (TMeQ [6]), and 4-nitrophenol was synthesized and structurally characterized by single-crystal X-ray diffraction. A combination of hydrogen-bonding between the latticed water molecule and the hydroxyl group of 4-nitrophenol, the hydroxyl group of 4-nitrophenol and the carbonyl groups lining the portals in additon, the C-H⋯π interactions between the 4-nitrophenol molecules could be the driving forces of formation such an exclusion host-guest assembly.