西佛碱金属配合物的合成及表征

Synthesis and Characterization of Schiff Base Metal Complexes

以水杨醛与邻苯二胺、苯胺为原料，合成了水杨醛缩邻苯二胶Ａ，水杨醛缩苯胺Ｂ．利用这两个配体与四氯化钛、三氯化铁络合，合成了４个新型的西佛碱金属配合物．ＤＳＣ研究表明，配合物中无配位的溶剂．配合物的１ＨＮＭ Ｒ中可以看出酚羟基信号．红外光谱分析表明，配体Ａ、Ｂ存在分子内、分子间氢键，与金属氯化物络合后，分子间、分子内氢键打开，金属原子与配体中的亚胺氮原子及羟基配位形成螯合物．配体Ａ形成的络合物中的氮与钛的配位键比配体Ｂ中的相应键强．络合物为配体与金属氯化物的加合物．

The new titanium (IV) and iron (III) Schiff base complexes were synthesized by the reaction of metal chloride with the N, N'-disalicylidene-1,2-phenylene-diamine, N-salicylideneaniline ligands, which coming from the reaction of salicylaldehyde with 1,2-phenylenediamine, aniline. Respectively, the DSC spectrum indicated that there was no solvent in the ligands. The signal of phenol hydroxy was found in the ligands by 1HNMR. And the IR spectrum showed that there were intramolecular or intermolecular hydrogen bonds in ligands A and B. After ligands A and B coordinated to the metal of the chloride, the intramolecular or intermolecular hydrogen bonds were broken, and the complexes were formed by the coordination of the metal with nitrogen of imine and hydroxy in ligands. The coordination bonds of nitrogen and titanium from the complex formed by ligand A were stronger than those from ligand B. The complexes were the additions of ligands and metal chloride.