Ethylene Polymerization by (α-Diimine)Nickel(II) Complexes Bearing Different Substituents on para-Position of Imines Activated with MMAO

A series of (alpha-diimine)nickel(II) complexes [ArN = C(Nap)C = NAr]NiBr2 (Nap = 1,8-naphthdiyl, Ar = 2,6-Me2C6H3, 3a; Ar = 2,4,6-Me3C6H2 3b; Ar = 2,6-Me-2-4-tBuC(6)H(2), 3c; Ar 2,6-Me-2-4-BrC6H2, 3d; Ar = 2,6-Me-2-4-ClC6H2, 3e; Ar 2,6-iPr(2)C(6)H(3), 3f; Ar = 2,4,6-iPr(3)C(6)H(2), 3g; Ar = 2,6-iPr-4-BrC6H2, 3h) have been synthesized, characterized, and investigated as precatalysts for ethylene polymerization in the presence of modified methylaluminoxane (MMAO).

[1]  Yue-sheng Li,et al.  Ethylene polymerization with silica-supported bis(imino)pyridyl iron(II) catalysts , 2005 .

[2]  Li-Ming Tang,et al.  Synthesis and Ethylene Polymerization Activity of a Novel, Highly Active Single-Component Binuclear Neutral Nickel(II) Catalyst , 2005 .

[3]  Yue-sheng Li,et al.  Copolymerization of Ethylene with Methyl Methacrylate with Neutral Nickel(II) Complexes Bearing β-Ketoiminato Chelate Ligands , 2005 .

[4]  Yi Zheng,et al.  Fe(II) and Co(II) pyridinebisimine complexes bearing different substituents on ortho- and para-position of imines : synthesis, characterization and behavior of ethylene polymerization , 2005 .

[5]  Huarong Liu,et al.  Highly active new α-diimine nickel catalyst for the polymerization of α-olefins , 2005 .

[6]  Zesheng Li,et al.  Ethylene polymerization with a highly active and long-lifetime macrocycle trinuclear 2,6-bis(imino)pyridyliron , 2005 .

[7]  Makoto Watanabe,et al.  Novel Azaferrocenyliminonickel Catalysts for Olefin Polymerization , 2005 .

[8]  Xiaozhen Yang,et al.  Influence of electronic effect on catalytic activity of salicylaldiminato nickel(II) complexes , 2004 .

[9]  H. Nagashima,et al.  Nickel(II) Isocyanide Complexes as Ethylene Polymerization Catalysts , 2004 .

[10]  A. R. Galletti,et al.  Ethylene polymerization by bis(salicylaldiminate)nickel(II)/Aluminoxane catalysts , 2004 .

[11]  J. Ziller,et al.  Cyclophane-based highly active late-transition-metal catalysts for ethylene polymerization. , 2004, Angewandte Chemie.

[12]  P. Ghosh,et al.  Ethylene Homopolymerization and Copolymerization with Functionalized 5-Norbornen-2-yl Monomers by a Novel Nickel Catalyst System , 2003 .

[13]  Xiaoyan He,et al.  Nickel(II) Complexes Bearing N,O-Chelate Ligands: Synthesis, Solid-Structure Characterization, and Reactivity toward the Polymerization of Polar Monomer , 2003 .

[14]  S. Mecking,et al.  Catalytic Polymerization of Ethylene in Aqueous Emulsion with a Simple in Situ Catalyst , 2003 .

[15]  M. Brookhart,et al.  Synthesis and Ethylene Polymerization Activity of a Series of 2-Anilinotropone-Based Neutral Nickel(II) Catalysts , 2003 .

[16]  H. Alt,et al.  The influence of halogen substituents at the ligand framework of (α-diimine)nickel(II) catalyst precursors on their behavior in ethylene oligomerization and polymerization , 2003 .

[17]  H. Alt,et al.  (α-Diimine)nickel(II) complexes containing chloro substituted ligands as catalyst precursors for the oligomerization and polymerization of ethylene , 2003 .

[18]  M. Brookhart,et al.  A highly active anilinoperinaphthenone-based neutral nickel(II) catalyst for ethylene polymerization , 2003 .

[19]  G. Erker,et al.  Formation of a butadienenickel-based zwitterionic single-component catalyst for ethylene polymerization: an alternative activation pathway for homogeneous Ziegler-Natta catalysts of late transition metals. , 2002, Angewandte Chemie.

[20]  Tae Ho Kim,et al.  α-Iminoenamido Ligands: A Novel Structure for Transition-Metal Activation , 2002 .

[21]  A G Orpen,et al.  Nickel Ethylene Polymerization Catalysts Based on Phosphorus Ligands , 2001 .

[22]  M. Brookhart,et al.  A Highly Active Anilinotropone-Based Neutral Nickel(II) Catalyst for Ethylene Polymerization , 2001 .

[23]  B. Rieger,et al.  New C2v- and Chiral C2-Symmetric Olefin Polymerization Catalysts Based on Nickel(II) and Palladium(II) Diimine Complexes Bearing 2,6-Diphenyl Aniline Moieties: Synthesis, Structural Characterization, and First Insight into Polymerization Properties , 2001 .

[24]  J. Claverie,et al.  Very Active Neutral P,O-Chelated Nickel Catalysts for Ethylene Polymerization , 2001 .

[25]  C. Novat,et al.  Catalytic Polymerization of Ethylene in Emulsion , 2001 .

[26]  S. Mecking.  Olefin Polymerization by Late Transition Metal Complexes-A Root of Ziegler Catalysts Gains New Ground. , 2001, Angewandte Chemie.

[27]  M. Brookhart,et al.  Late-metal catalysts for ethylene homo- and copolymerization. , 2000, Chemical reviews.

[28]  B. Novak,et al.  Copolymerization of polar monomers with olefins using transition-metal complexes. , 2000, Chemical reviews.

[29]  E. Oñate,et al.  Synthesis of branched polyethylene using (α-diimine)nickel(II) catalysts : influence of temperature, ethylene pressure, and ligand structure on polymer properties , 2000 .

[30]  T. Woo,et al.  The influence of electronic and steric factors on chain branching in ethylene polymerization by Brookhart-type Ni(II) diimine catalysts: a combined density functional theory and molecular mechanics study , 1999 .

[31]  S. Mecking,et al.  Mechanistic Studies of the Palladium-Catalyzed Copolymerization of Ethylene and α-Olefins with Methyl Acrylate , 1998 .

[32]  D. J. Tempel,et al.  Living Polymerization of α-Olefins Using NiII−α-Diimine Catalysts. Synthesis of New Block Polymers Based on α-Olefins , 1996 .

[33]  S. Mecking,et al.  Copolymerization of Ethylene and Propylene with Functionalized Vinyl Monomers by Palladium(II) Catalysts , 1996 .

[34]  Maurice Brookhart,et al.  New Pd(II)- and Ni(II)-Based Catalysts for Polymerization of Ethylene and .alpha.-Olefins , 1995 .