已应用水解(c -C 5 H 9)7 Si 8 O 12 Cl(1)后获得的立方八聚羟基倍半硅氧烷(c -C 5 H 9)7 Si 8 O 12(OH)(2)和三苯基硅烷醇作为二氧化硅接枝的烯烃聚合催化剂的模型载体。通过氯化物易位或质子分解将配体引入第4族金属上。Cp''MCl 3(M = Ti,Zr; Cp''= 1,3-C 5 H 3(SiMe 3)的处理2)含倍半硅氧烷和硅氧基锂或salts盐,[(c -C 5 H 9)7 Si 8 O 13 ] M'(M'= Tl(3),Li(4),Li·TMEDA(5))或Ph 3 SiOTl给出了二氯化物络合物Cp''[(c -C 5 H 9)7 Si 8 O 13 ] MCl 2(M = Ti(6a),Zr(7a))和Cp''[Ph 3 SiO] TiCl 2(8a)或一氯化物Cp''[(c -C 5 H 9)7 Si 8 O 13 ] 2
Half-Sandwich Titanium Complexes Stabilized by a Novel Silsesquioxane Ligand: Soluble Model Systems for Silica-Grafted Olefin Polymerization Catalysts
作者:Robbert Duchateau、Hendrikus C. L. Abbenhuis、Rutger A. van Santen、Sven K.-H. Thiele、Maurits F. H. van Tol
DOI:10.1021/om980572g
日期:1998.11.1
The cuboctameric silsesquioxane silanol (c-C5H9)7Si8O12(OH) has been applied as a model support for silica-grafted olefinpolymerizationcatalysts. Complexes of the type Cp‘‘[(c-C5H9)7Si8O13]TiX2 (Cp‘‘ = 1,3-C5H3(SiMe3)2; X = Cl, CH2Ph) form active α-olefin polymerizationcatalysts.
立方八聚倍半硅氧烷硅烷醇(c -C 5 H 9)7 Si 8 O 12(OH)已用作二氧化硅接枝的烯烃聚合催化剂的模型载体。Cp''[(c -C 5 H 9)7 Si 8 O 13 ] TiX 2(Cp''= 1,3-C 5 H 3(SiMe 3)2 ; X = Cl,CH 2 Ph )形成活性α-烯烃聚合催化剂。