Design, Synthesis, Structure And Foundations Research Of The Transition Metal Complexes Containing Scorpionate-like Ligands

Because2,6-bis(3-pyrazolyl)pyridine compounds have very big π-π conjugation, they conduce to the energy and electron transfer. They belong to the pyrazole derivative, so they have better biological activity and compatibility. They are widely applied in field of the fluorescence, medicine and dyes. At the same time,2,6-bis(3-pyrazolyl)pyridine compounds as organic ligands having special scorpionate-liked structure and like a scorpion lock tightly metal, so they have very strong coordination ability with metals. The complexes containing2,6-bis(3-pyrazolyl)pyridine are widely applied in physical and chemical properties, such as catalytic behavior, magnetic properties, optics, electrochemistry and so on.At present, the complexes synthesized by2,6-bis(3-pyrazolyl)pyridine as organic ligands have only those kinds with Cu、Co、Ag、Cd、Zn、Sm、Ru etc. In order to expand their research direction, we have synthesized19transition metal complexes with2,6-bis(5-phenyl-lH-pyrazol-3-yl)pyridine or2,6-bis(5-methyl-lH-pyrazol-3-yl) pyridine and flexible dicarboxylic acid as the ligand. X-ray single crystal diffractometer determines their structures. In addition, the thermal stability properties of the all complexes have been studied, and the fluorescence of the complexes1,3-6,10,13-16and18have also been studied. Note:H2L1=2,6-bis(5-phenyl-1H-pyrazol-3-yl)pyridine; H2L2=2,6-bis(5-methyl-1H-pyrazol- 3-yl)pyridine; H2ox=oxalic acid; H2seb=sebacic acid...