Since the milestone discovery of Ni(Ⅱ) salicylaldiminate catalysts by Grubbs and co-workers [1], nickel(Ⅱ) complexes with N,N-and N,O-donor ligands have strengthened their lead in the search for highly active platforms for olefins homo-and copolymerization with various co-monomers, including those with polar groups, to achieve polymers with precisely controlled microstructures [2,3].The most attractive and fruitful features of such catalysts have been their simplicity and exceptional synthetic flexibility of the ligand frameworks, as well as high and versatile catalytic reactivity [4,5].