Synthesis And Structure Of 1,3,4-oxadiazole And Fe~?,Co~?,Ni~? Complexes

The nature of the ligand have been widely used as medicine, magnetism and catalytic chemistry. transition-metal Fe^?,Co^?,Ni^? complexes, efficient and high selective catalysts. Therefore, design synthesis different oxadiazoles derivatives and new structure of Fe, Co, Ni metal complexes have important research value. The main work are as follows:The synthesis and crystal structure of new [Fe₂?L?₂?DMSO?₂?Cl?₂] [Co₂?L?₂?DMSO?₂?Cl?₂]and[Ni₂?L?₂?DMSO?₂?Cl?₂] complexes where L=5-?2-pyridyl?-1,3,4-oxadiazole-2-thione, have been successfully obtained by a diffusion synthetic method and characterized by single-crystal X-ray diffraction, infrared spectroscopy, elemental analysis, NMR(¹H and ¹³C), physical characteristics. On the basis of the X-ray analyses, the radii of the metal ions are found t o play an important role of determining the structures. transition-metal atoms, which seems to be the main factor controlling the structures and luminescent properties of the reaction productsin this system. The structure of the new compounds has been established on the bases of chemical and spectroscopic evidences. So a bidentate ligand will be constituded to react with other metallic for synthesis more efficiently and selectively catalysts of planar chiral.Synthesis of new series of the ligand 2,6-dia?2-substituted-1,3,4-oxad Iazo? pyridine. Use the ligand 2,6-dia?1,3,4-oxadiazole?pyridine coord dinate with Fe?Co?Ni for three new metal complexes. All of the ligands and complexes were characterized by NMR, XRD and IR techniques.