异核双金属配合物的合成及催化性能的研究

SYNTHESIS AND CATALYTIC ACTIVITES OF THE POLYNUCLEAR HETEROMETALLIC COMPLEXES

本文合成了一种新型的金属有机双齿配体，并借助于金属配体中桥配体的桥联作用，合成了与Ｃｄ（Ⅱ）和Ｈｇ（Ⅱ）卤化物所形成的双金属配合物，对其结构进行了表征，研究了此类化合物对于ＣＯ２与环氧乙烷反应制备碳酸乙烯酯反应的催化性能，讨论了反应条件的影响．实验结果表明：（１）在相同的反应条件下，就配合物的催化活性而言：Ｆｅ（ＣＯ）３Ｌ２－（ＨｇＩ２）２＞ＨｇＩ２＞Ｆｅ（ＣＯ）３Ｌ２－（ＨｇＣｌ２）２＞Ｆｇ（ＣＯ）３Ｌ２＞Ｆｇ（ＣＯ）３Ｌ２－ＣｄＣｌ２（Ｌ＝ＰｈＭｅＰｐｙ）．（２）对于同一种化合物，反应条件的影响规律是：高温高压有利于催化反应．

A new bidental ligand was synthesized,it combined with CdX2 and HgX2(X=Cl,1)to form polynuclear hetermetallic complexes.Their molecular structure were characterized by IR,elemental analysis,their catalytic activites for the reaction of CO2 with oxirane to make ethylene carbonate were studied and the influence of the reaction condition for the catalytic reaction were discussed.The experimental results showed:(1).Under the same reaction condition,the catalytic activites of the complexes have following law,that is,Fe(CO)3 L2-(HgCI2)2>Fe(CO)3L2>Fe (CO)3L2-CdCI2.(2).The higher temperature and pressure are to the advantage of the formation of products.