Living and block polymerization of α-olefins using a Ni(II)-α-diimine catalyst containing OSiPh2tBu groups

Homo-Polymerization of 1-Hexene Catalysed by O^N^N (Salicylaldimine)Iron(III) Pre-Catalysts to Branched Poly(1-hexene)

“…Significantly, the polydispersity indices remained narrow and did not change with the variations in temperature, indicating that the active sites for propagation in the catalysts are not affected by increase in reaction temperature. Marques et al [32] have also reported this observation where narrow polydispersity indices are observed at temperatures ranging from´11 to 25˝C.…”

“…Catalysts 2016, 6, 47 2 of 12 particular, cationic nickel(II) catalysts have been found to produce polyethylene, polypropylene and poly(1-hexene) [29][30][31][32][33] that have significant branching. Iron(II) and cobalt(II) catalysts, bearing bis(arylimino)pyridine ligands, have also been studied for the polymerisation of ethylene [34][35][36].…”

“…Through variations in the ligand design, reaction conditions and type of monomer used, novel elastomeric multiblock poly(α-olefin) [19][20][21][22] and regioblock co-polymers [26][27][28] have been synthesised. In particular, cationic nickel(II) catalysts have been found to produce polyethylene, polypropylene and poly(1-hexene) [29][30][31][32][33] that have significant branching. Iron(II) and cobalt(II) catalysts, bearing bis(arylimino)pyridine ligands, have also been studied for the polymerisation of ethylene [34][35][36].…”

(1E,2E)-N1,N2-Bis(5′-methyl-[1,1′:3′,1′′-terphenyl]-4′-yl)acenaphthylene-1,2-diimine unknown solvent

“…The catalytic activity and properties of the resulting data reports polymers are greatly dependent on the reaction conditions (Helldö rfer et al, 2003) and ligand structures (Meinhard et al, 2007;Popeney et al, 2011;Yuan et al, 2005;2013). Nickel and palladium metal complex catalysts have a high catalytic activity for ethylene polymerization which gives high branched polyethylene, and the copolymerization of ethylene and polar monomers have also high catalytic activity.…”

Copolymerization of methyl methacrylate with 4‐vinylpyridine initiated by a novel Ni(II)α‐Benzoinoxime complex

“…Ni(II)a-diimine catalysts, when activated with methylaluminoxane (MAO), exhibit high activity towards the polymerization of ethylene, 1-hexene, and propylene as well as their block copolymerization. [5][6][7] Moreover, this kind of catalysts can be used as ATRP catalysts for the polymerization of styrene and methyl methacrylate (MMA) with poor to moderate control process. 8 Divalent nickel complex bearing acetylide ligand Ni(CBCPh) 2 (PBu 3 ) 2 has been a potential effective catalyst for the ATRP of MMA.…”