四甲基二硅桥连取代环戊二烯基配体相继与丁基锂及 MCl4· 2 THF作用 ,生成四甲基二硅桥连取代环戊二烯基钛和锆化合物 ( Me2 Si Si Me2 ) ( C5 H4R) ( C5 H4R ) MCl2 [R=H,R =t-Bu,M=Ti( 1 ) ,Zr( 2 ) ,Hf( 3 ) ;R=H,R =Me,M=Ti( 4) ;R=R =Me,M=Ti( 5) ,Zr( 6) ].通过元素分析、MS和 1 H NMR谱表征了化合物的分子结构 ,并通过 X射线衍射分析测定了化合物 1的晶体结构 .研究了在甲基铝氧烷 ( MAO)的助催化下 ,化合物 1— 3和 6对乙烯聚合的催化性能 Tetramethyldisilyl bridged substituted cyclopentadienyl ligand successively reacted with butyllithium and MCl 4 · 2 THF to form tetramethyldisilyl bridged substituted cyclopentadienyltitanium and zirconium compounds (Me 2 Si Si Me 2 (C5H4R) MCl2 [R = H, R = t-Bu M = Ti1 Zr2 Hf3 R = H, R = Me, M = Ti 4); R = R = Me, M = Ti (5), Zr (6)] The molecular structure of the compound was characterized by elemental analysis, MS and1H NMR spectra and the Crystal structure.The catalytic properties of compounds 1-3 and 6 for ethylene polymerization were investigated with the aid of methylaluminoxane (MAO)