Rodriguez, Brandon A.; Delferro, Massimiliano; Marks, Tobin J., Journal of the American Chemical Society, 2009, vol. 131, p. 5902 - 5919
作者:Rodriguez, Brandon A.、Delferro, Massimiliano、Marks, Tobin J.
DOI:——
日期:——
Neutral Bimetallic Nickel(II) Phenoxyiminato Catalysts for Highly Branched Polyethylenes and Ethylene−Norbornene Copolymerizations
作者:Brandon A. Rodriguez、Massimiliano Delferro、Tobin J. Marks
DOI:10.1021/om800208f
日期:2008.5.1
The synthesis and characterization of novel bimetallic, neutrally charged dinickel 2,7-diimino-1,8-dioxynaphthalene polymerization catalysts is reported. Ethylene polymerizations as well as ethylene-co-norbornene copolymerizations display increased catalytic activity, methyl branch formation, and comonomer enchainment selectivity versus the monometallic analogues. Furthermore, these systems turn over in the absence of cocatalyst under mild conditions.