264872-23-3Relevant academic research and scientific papers
Zirconocene dichloride complexes with a 1,2-naphthylidene bridge as catalysts for the polymerisation of ethylene and propylene
Alt, Helmut G.,Baker, Robert W.,Dakkak, Mahmoud,Foulkes, Michael A.,Schilling, Marc O.,Turner, Peter
, p. 1965 - 1977 (2004)
Ansa-zirconocene dichloride complexes containing a 9-fluorenyl group at the 1-position of naphthalene and a 2-indenyl 12, 1-indenyl 13, or cyclopentadienyl 14 group at the 2-position of the naphthalene were synthesised and characterised. The molecular structures of the complexes have been determined by single crystal X-ray diffraction studies. After activation with excess methylalumoxane (MAO), the complexes were used as homogeneous catalysts for the homopolymerisation of ethylene and propylene.
Enantiospecific synthesis of a planar chiral fluorenylzirconium ansa-metallocene: Synthesis and structures of 1-(9-fluorenyl)-and [1-(1-methyl-9-fluorenyl)-2-(2-indenyl)naphthaIene]zirconium dichloride
Baker, Robert W.,Foulkes, Michael A.,Turner, Peter
, p. 431 - 433 (2007/10/03)
Di-Iithiation of +ac(R)-1-methyl-9-[2-(2-indenyl)-1-naphthyl]fluorene, +ac(R)-6, generates an axially chiral fluorenyl ligand, (a-S)-lO, which on reaction with ZrCl4 enantiospecifically provides the planar chiral ansazirconocene (p-S)-[1-(1-methyl-9-fluorenyl)-2-(2-indenyl)-naphthalene]zirconium dichloride, (p-5)-8; single crystal X-ray structures have been determined for the racemic awsa-zirconocene rac-8 and the related C8-symmetric ansazirconocene 7. The Royal Society of Chemistry 2000.
