Zirconocenes and hafnocenes with boron-substituted
申请人:Studiengesellschaft Kohle MbH
公开号:US05962718A1
公开(公告)日:1999-10-05
Zirconocenes and hafnocenes with borylated cyclopentadienyl ligands and methods for the preparation thereof.
锆茂和铪茂与硼化环戊二烯基配体及其制备方法。
Donor complexes of bis(1-indenyl)phenylborane dichlorozirconium as isospecific catalysts in propene polymerization
作者:Manfred T. Reetz、Marc Willuhn、Christian Psiorz、Richard Goddard
DOI:10.1039/a902543j
日期:——
Chiral boron-bridged ansa-type zirconocenes can be prepared in a few simple steps; various donor molecules such as Et2O, THF or PMe3 undergo complexation at boron leading to catalysts having vastly different catalytic properties in Ziegler–Natta polymerization of propene; the PMe3-containing catalyst is the most active and stereoselective (96% isotacticity).