Salen异核双金属配合物的合成及催化性能研究

Synthesis and Catalytic Properties of Hetero-nuclear Bimetallic Complex Based on Salen Ligand

以水杨醛和乙二胺为原料,冰乙酸为催化剂,室温下在乙醇中反应得到双水杨醛缩乙二胺(salen)配体,接着与Co(II)、Ni(II)、Cu(II)和Zn(II)在乙醇中加热回流反应,得到salen单金属配合物,最后在室温下分别与Hg(II)在甲醇-氯仿溶剂体系中反应得到salen异核双金属配合物[M(salen)HgCl_(2)](M=Co(II)、Ni(II)、Cu(II)和Zn(II)),初步研究了其催化酮肟的贝克曼重排反应。

A bis(salicylaldiminato)(salen)ligand was synthesized using salicylaldehyde and ethylenediamine as starting materials in the presence of glacial acetic acid in ethanol solution at room temperature.The salen ligand reacted with Co(II),Ni(II),Cu(II)and Zn(II)in ethanol solution at reflux temperature to obtain salen-based monometallic coordination compounds,which further reacted with Hg(II)at room temperature in methanol-chloroform system to give salen-based hetero-nuclear bimetallic complex[M(salen)HgCl_(2)][M=Co(II),Ni(II),Cu(II)and Zn(II)].The catalytic properties in Beckmann rearrangement reaction of ketoxime were preliminarily investigated.