Premium
Nickel and cobalt complexes bearing β‐ketoamine ligands: syntheses, structures and catalytic behavior for norbornene polymerization
Author(s) -
Bao Feng,
Lü Xingqiang,
Qiao Yuqin,
Gui Guoqiu,
Gao Haiyang,
Wu Qing
Publication year - 2005
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.928
Subject(s) - chemistry , norbornene , methylaluminoxane , catalysis , cobalt , polymer chemistry , polymerization , nickel , transition metal , organic chemistry , combinatorial chemistry , polymer , metallocene
Late transition metal (nickel, cobalt) complexes (1, 2) with β‐ketoamine ligand (L) based on the pyrazolone derivative are synthesized by condensing 1‐phenyl‐3‐methyl‐4‐benzoyl‐5‐pyrazolone with p ‐fluoroaniline, and then treating the β‐ketoamine (L) produced with the respective metal halide. The bis(β‐ketoamine)metal complexes can act as catalyst precursors for norbornene polymerization with activation by methylaluminoxane. The effects of the central metal variation in the complex on catalyst activities and polymer microstructure are described. Copyright © 2005 John Wiley & Sons, Ltd.