Synthesis, Stucture And Properties Of N/O-containing Polydentate Ligands And Their Metal Complex

N/O-containing multidentate Schiff-base ligands, especially hydrazone-type Schiff base are attracting extensive attention of many researchers of these compounds and their metal complexes due to its strong coordination ability, excellent bio-pharmacological activity, novel functional materials and other aspects of superior performance.In the thesis, we properly designed and synthesized five new N, N-rigid ligands containing N-O multidentate and five new transition metal complexes via self-assembly, as well as two rare earth complexes under solvothermal condition. The structure characterization was undertaken by X-ray crystallography, elemental analysis. The main content of this thesis is listed as following:1. One monoacyldrazone(2-pyridinecarboxaldehyde reduction the pyrazine Acylhydrazone (L1)), was synthesized with pyrazine-2-carboxylic acid as material. In the meantime,one complexe containing this ligand of Co(Ⅱ) was prepared and synthetized. then, we study the structure and magnetic.2. One diacyldrazone was synthesized with pyridine-2,6-dicarbohydrazide as mediate, Togethere with its copper self-assembly into triazole metal complexes.3. Two diacyldrazones were synthesized with2-methyl(ethy)ethyl malonic as materials(L4-L5), while using L-(+)-two tartaric acid ethyl ester to form One monoacyldrazone (L2). Three complexes containing these ligands of Co(Ⅱ)> Ni(Ⅱ)> Cu(Ⅱ) were prepared and three single crystals of complexes were obtained in the solvent of methanol.in addition,we study the structures.4. Using pyridine2,3-dicarboxylic acid as raw materials, we synthetized two rare earth complexes by solvothermal.And the complex was studied by X-ray,elemental analysis to characterize the structure.