Crystal Engineering of Supramolecular Interaction Based on Different Molecular Synthons

Two new supramolecular compounds, [(H4aobtc)0.5(H2O)0.5] (1) and [(H3aobtc)(H2bipy)0.5] (2) (H4aobtc = azoxybenzene-3,3′,4,4′-tetracarboxylic acid), were synthesized and characterized. Compound 1 has a complicated three-dimensional hydrogen bonding network with 4-connected {33.62.7} topology. Compound 2 also shows a three-dimensional supramolecular motif with hexagonal topology. The result indicated that hydrogen bonding interactions from different molecular synthons take important roles in the formation of supramolecular architectures.