%0 Conference Proceedings %T α-Diimine binuclear Ni-based catalysts for ethylene polymerization: effect of ortho-substituent %A Khosh Sefat, Mostafa %A Saeid Ahmadjo %A Seyed Mohammad Mehdi Mortazavi %A Zohuri, Gholamhossein %A Majid Zahmaty %A Khosrow Valieghbal %J 46th IUPAC POLYMER CONGRESS %D 2016