Titanosiloxanes Consisting of Tetrahedrally Coordinated Ti Cores and Branched Siloxane Cages

Abstract

Well-defined titanosiloxane molecules with tetrahedrally coordinated Ti centers are synthesized by using mono-silanol functionalized siloxane cages as building blocks. The Ti sites are modified with the OSi(OSi)3 units, which is analogous to that of Ti-containing zeolites. Such titanosiloxane molecules are important as models for Ti-containing silica-based catalysts.