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羰基钴簇合物催化苯乙炔三聚反应的研究
STUDY OF CATALYTIC REACTION OF TRIMERIZATION OF PHENYLACETYLENE BY CARBONYL COBALT CLUSTER
【摘要】 <正> 和许多金属簇合物一样,羰基钴簇合物也可作为有机反应的催化剂。Kruerke等曾报道[(CH3)3CC2H]CO2(CO)6可以催化(CH3)3CC2H三聚成苯的衍生物。以后,虽然又有文献报道了类似的反应,但到目前为止,对这类反应的研究仅限于对生成的苯的衍生物的表征。反应产率一般不高于20%,对催化过程也没有作过讨论。
【Abstract】 Catalytic reaction of trimerization of PhC2H to 1,2,4-triphenylbenzene with four carbonyl cobalt clusters (PhC2H)Co2 (CO)6(Ⅰ), (PhC2H)Co2-(CO)6PPh3(Ⅱ),,(PhC2H)Co2(CO)4(PPh3)2 (Ⅲ),and CH3CCo3(CO)9(Ⅳ) has been studied separately. The larger charge density and the less steric hindrance in Co2C2 were favorable to the catalysis of clusters for the trimerization.For the four kinds of catalysts, the order of the catalysis of trimerization of phenylacetylene to 1,2,4-triphenylbenzene is:Ⅱ>Ⅲ>Ⅰ>Ⅳ.The catalytic process was also discussed.
【基金】 国家自然科学基金
- 【文献出处】 催化学报 ,Chinese Journal of Catalysis , 编辑部邮箱 ,1989年01期
- 【被引频次】2
- 【下载频次】106