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Amine–Imine Nickel Catalysts with Pendant O‑Donor Groups for Ethylene (Co)Polymerization

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journal contribution
posted on 2023-03-18, 17:43 authored by Yan-Bing Wang, Chenlong Nan, Weize Zhuo, Chen Zou, Hui Jiang, Xin-Qi Hao, Changle Chen, Mao-Ping Song
The introduction of a secondary interaction is an efficient strategy to modulate transition-metal-catalyzed ethylene (co)polymerization. In this contribution, O-donor groups were suspended on amine–imine ligands to synthesize a series of nickel complexes. By adjusting the interaction between the nickel metal center and the O-donor group on the ligands, these nickel complexes exhibited high activities for ethylene polymerization (up to 3.48 × 106 gPE·molNi–1·h–1) with high molecular weight up to 5.59 × 105 g·mol–1 and produced good polyethylene elastomers (strain recovery (SR) = 69–81%). In addition, these nickel complexes can catalyze the copolymerization of ethylene with vinyl acetic acid, 6-chloro-1-hexene, 10-undecylenic, 10-undecenoic acid, and 10-undecylenic alcohol to prepare the functionalized polyolefins.