The Synthesis, Crystal Structures, and Thermal Properties of a New Zn(II) Coordination Polymer With Malonic Acid

Abstract

The reaction of malonic acid (HOOCCH2COOH), Zn(NO3)2·6H2O, 4,4′-dipyridyldisulfide (bpds) and NaOH in aqueous methanol solution under ambient conditions yielded a new complex Zn2(bpds)2(C3H2O4)2(H2O)2. The complex has been characterized by single-crystal X-ray diffraction, IR spectroscopy, TG-DTA analyses, elemental analyses, and powder X-ray diffraction. The Zn atoms are octahedrally coordinated by one nitrogen atom and five oxygen atoms to complete a ZnNO5 octahedra, which is bridged by malonato ligands to generate 2D sheets with the bpds acted as terminal ligand. The resulting 2D sheets are stacked in an ···ABABAB··· sequence due to van der Waals forces.