One Ligand Fits All: Cationic Mono(amidinate) Alkyl Catalysts over the Full Size Range of the Group 3 and Lanthanide Metals
作者:Sergio Bambirra、Marco W. Bouwkamp、Auke Meetsma、Bart Hessen
DOI:10.1021/ja0475297
日期:2004.8.1
Using a sterically demanding amidinate ancillary ligand and an in situ alkylation procedure, neutral mono(amidinate) dialkyl and cationic mono(amidinate) monoalkyl complexes were prepared for metals spanning the full size range of the group 3 and lanthanide metals. The activity of the cationic monoalkyls in catalytic ethenepolymerization was found to vary by over 2 orders of magnitude depending on