Ethylene Polymerization Activity of (R3P)Ni(codH)+ (cod=1,5-cylcooctadiene) Sites Supported on Sulfated Zirconium Oxide

PAr3 containing o-OMe, o-Me, or o-Et substituents reacts with Bronsted sites on sulfated zirconium oxide (SZO) to form [HPAr3][SZO]. The phosphonium sites on this material react with bis (cyclooctadiene)nickel [Ni(cod)(2)] to form [Ni(PAr3)(codH)][SZO] that are active in ethylene polymerization reactions. Selective poisoning studies with pyridine show that similar to 90% of the Ni(PAr3)(codH)(+) sites in this material are active in polymerization reactions.

Automated summary

PAr3 with o-OMe, o-Me, or o-Et substituents reacts with Bronsted sites on sulfated zirconium oxide (SZO) to form [HPAr3][SZO]. The phosphonium sites on this material react with bis (cyclooctadiene)nickel [Ni(cod)(2)] to form [Ni(PAr3)(codH)][SZO] that are active in ethylene polymerization reactions. Selective poisoning studies with pyridine show that around 90% of the Ni(PAr3)(codH)(+) sites in this material are active in polymerization reactions.