Bridged bis-pyridinylimino dinickel(II) complexes: Syntheses, characterization, ethylene oligomerization and polymerization

A series of dinickel(II) complexes bearing 4,4′-methylene-bis(2,6-disubstituted aniline) were synthesized and characterization by IR, microanalysis and X-ray diffraction. In the presence of MAO, these complexes displayed good catalytic activities for ethylene polymerization and oligomerization.