Half-Sandwich Titanium Complexes Stabilized by a Novel Silsesquioxane Ligand: Soluble Model Systems for Silica-Grafted Olefin Polymerization Catalysts

Abstract

The cuboctameric silsesquioxane silanol (c-C5H9)7Si8O12(OH) has been applied as a model support for silica-grafted olefin polymerization catalysts. Complexes of the type Cp‘‘[(c-C5H9)7Si8O13]TiX2 (Cp‘‘ = 1,3-C5H3(SiMe3)2; X = Cl, CH2Ph) form active α-olefin polymerization catalysts.