Abstract:

The  compound, ［Ni(Hpdc)(2,2’-bipy)(H2O)2］·H2O (H3pdc=3,5pyrazoledicarboxylic acid, 2,2’-bipy=2,2’-bipyridine), was prepared under hydrothermal conditions. The structure of the coordination complex was determined by Xray single crystal diffraction and characterized by elemental analysis, IR spectrum and thermogravimetric analysis. The coordination complex crystallized in the triclinic system, with space group Pī. The metal ion was located in the centre of a distorted octahedron. The Ni(II) ion was sixcoordinated with three oxygen atoms and three nitrogen atoms. The four molecules that built  up a cell unit were connected via hydrogen bonds while no π-π interactions were observed between aromatic rings.

Key words: 3,5-pyrazoledicarboxylic acid; 2,2’-bipyridine; hydrothermal synthesis; metal-organic framework; crystal structure