Catalytic Trimerization of Ethylene with Highly Active Half-sandwich Titanium Complexes Bearing Pendant p-Fluorophenyl Groups  

作　　者：王晨 黄吉玲 

机构地区：[1]Laboratory of Organometallic Chemistry, East China University of Science and Technology, Shanghai 200237, China

出　　处：《Chinese Journal of Chemistry》2006年第10期1397-1401,共5页中国化学（英文版）

基　　金：Project supported by the National Natural Science Foundation of China （No. 20372022） and the Major State Basic Research Development Program of China （No. 2005CB623801）.

摘　　要：Two new complexes [η^5-C5H4CMe2-（p-fluorophenyl）]TiCL3 （1） and [η^5-C4h4C（cyclo-C5H10）-（p-fluorophenyl）]TiCl3 （2） were synthesized and characterized. Their activities and selectivities for trimerization of ethylene were investigated. The introduction of fluorine atom greatly weakened the arene coordination, but this disadvantageous factor can be eliminated by introduction of a bulky substituent, such as cyclo-C5H10, to the bridging carbon linked to the Cp ring. The combinative effect of the fluorine substitute and the bridging unit can make complex 2 as a highly active and selective catalyst for ethylene trimerization. Its productivity and selectivity for 1-hexene can reach 1024.0 kg·mol^-1·h^-1 and 99.3% respectively.Two new complexes [η^5-C5H4CMe2-（p-fluorophenyl）]TiCL3 （1） and [η^5-C4h4C（cyclo-C5H10）-（p-fluorophenyl）]TiCl3 （2） were synthesized and characterized. Their activities and selectivities for trimerization of ethylene were investigated. The introduction of fluorine atom greatly weakened the arene coordination, but this disadvantageous factor can be eliminated by introduction of a bulky substituent, such as cyclo-C5H10, to the bridging carbon linked to the Cp ring. The combinative effect of the fluorine substitute and the bridging unit can make complex 2 as a highly active and selective catalyst for ethylene trimerization. Its productivity and selectivity for 1-hexene can reach 1024.0 kg·mol^-1·h^-1 and 99.3% respectively.

关 键 词：ETHYLENE TRIMERIZATION coordination CYCLOPENTADIENYL titanium 

分 类 号：O623.121[理学—有机化学]