A novel polymer-supported metallocene catalyst has been prepared. The polymer-support-ed metallocene displayed considerably high activity in ethylene polymeriza
Four alkoxo tungsten complexes[Cp2W(PMe3)OR]+OTs-(R=Me,Et,n-Pr,i-Pr) and monohydrido tungsten complex [Cp2W(H)(PMe3)]+OTs- were synthesized and characterized by
Supported rare earth catalysts were made from Nd (O-i-Pr)3 and the chlorides as well asbromides of the elements of I A and Ⅱ A groups which were used as suppor
A high reactive pentacoordinate organic silicon complex was at first prepared by reaction ofnatural silica with ethylene glycol and potassium hydroxide. Then a