Supramolecular structure in the cocrystal of 3, 5-bispyridyl-1-H-1, 2, 4-triazole and 4,4'-oxybis(benzoic acid)

摘要

A new cocrystal (3,4'-Hbpt)-(H_2oba) (3,4'-Hbpt =3-(3-pyridyl)-5-(4'-pyridyl)-l-H-l,2,4-triazole and H_2oba=4,4' -oxybis (benzoic acid)), was prepared via self-assembly in the presence of cobalt acetate as template by hydrothermal reactions. The title complex was characterized by single-crystal X-ray diffraction, elemental analysis and IR spectroscopy. Structural analysis reveals that the complex belongs to monoclinic system, space group P2_1/c. The two carboxylate groups from H_2oba are not deprotonated and form two kinds of strong intermolecular hydrogen bonds with 3,4'-Hbpt, which linking the molecules into one-dimensional chains. Furthermore, the one-dimensional chains are connected by the hydrogen bond interaction to form two-dimensional lamellar structures. Intermolecular hydrogen bonds may be effective in the stabilization of the crystal structure.