Design, Synthesis And Property Of New Triazene Ligands And Their Dinuclear (Cu^Ⅰ-Ⅱ、Ag^Ⅰ、Pd^Ⅰ、Ni^Ⅱ) Complexes

An important approach toward the synthesis of complexes that exhibit notable propertiesis the design of ligands with unique structure. Triazenide groups are a class ofmultifunctional ligands with advantages that having more coordination sites and can becoordinating selectively,and their coordination mode will be more flexible and diverse,if theeasy coordination heteroatoms （N, O, S, Cl, etc.） were introduced continuously. Triazenidemetal complexes especially the binuclear groups have attracted much attention for theirpotential broad application prospects in the fields of photic, electric, magnetical, catalytic,medicical etc. So, synthesis of bimetallic complexes supported by triazenide ligands andprobing into their properties is great importance to the development of coordinationchemistry.In this thesis，we have designed and synthesized three new triazenide ligands of1-[2-chloro（benzene）]-3-[（2-carboxymethyl）benzene]triazene （HL₁）,1-[2-bromo（benzene）]-3-[（2-carboxymethyl）benzene]triazene（HL₂） and1-[（2-iodo）benzene]-3-[benzothiazole] triazene（HL₃） respectively. In the present of Et3N, the reaction of transition metal （Cu, Ag,Pd） saltsand HL₁and HL₂produced six binuclear （M^I-M^I） complexes （complex1-6）. Structuralcharacterizations show that the coordination modes of six complexes are almost the same,complex1-5is a group of centrosymmetric dimmer. The data characterized by X-raycrystallography and NMR indicated that complex6who is an asymmetric molecule at solidstate but one centrosymmetric dimer in the organic solution. The result of organic catalyticreaction pointed out that complex6（Pd^Ⅰ-Pd^Ⅰ） is catalytic active in C-C coupling reaction.Similarly, In the present of Et3N complex7-8were gave by the reaction of transition metal（Cu,Ni） salts and HL₃. We focus on the structural characterization and magnetic propertiesstudy of complex7-8,both of them with the same coordination mode and non-symmetricalstructure. Magnetic studies indicate complex7-8are both diamagnetic molecules with strongantiferromagnetic interactions between Cu（Ⅱ） ions for complex7but much weak between thenickel（Ⅱ） centers for complex8.