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过渡金属异双核金属有机化合物的研究是一个活跃的领域,人们期望从中制取对极性小分子(如CO,CO2等)具有双功能活化的催化剂.周期表前区过渡金属或稀土元素(如Ti,Zr,Mo,La,Ce等)作为添加组分可明显地增加SiO2负载的铑催化剂催化CO氢化反应的活性和含氧化合物的选择性[1].虽然一些异双核金属氢基羰基化合物已被合成和表征[2],但是关于SiO2负载的异双核金属配合物催化剂的研究还未见文献报道.我们合成、表征了(PPh3)HPt(μ-PPh2)(μ-CO)M(CO)4(M=Cr,Mo,W)异双核配合物[3](I).本文研究了SiO2负载的该配合物催化剂对CO氢化反应和对丙烯氢甲酰化反应的两种催化功能.
The study of transition metal hetero-dinuclear organic compounds is an active area where one expects to prepare catalysts with bifunctional activation of small polar molecules such as CO, CO2, etc. Transition metal or rare earth elements in the front of the periodic table Ti, Zr, Mo, La, Ce, etc.) as additive components can obviously increase the activity of CO-catalyzed hydrogenation of SiO 2 supported on SiO 2 and the selectivity of oxygenates [1] .Although some heterobinuclear metal hydrogen carbonyls Has been synthesized and characterized [2], but there is no report about the catalysts of heterometaluclear complex supported on SiO2.We have synthesized and characterized HPT (μ-PPh2) (μ-CO) M ) 4 (M = Cr, Mo, W) Heterobinuclear Complex [3] (I). Two catalytic functions of the complex supported on SiO2 for CO hydrogenation and propane hydroformylation were studied in this paper.