Kaiti Wang Author

Research Article Open Access

Improved Catalytic Capabilities of Vanadium Complexes bearing Tridentate Constrained Cyclic β-Enaminoketonato Ligands towards Ethylene (Co)polymerization

Author(s):

Kaiti Wang, Lei Cui, Yanguo Li and Yuesheng Li

A series of vanadium complexes bearing tridentate constrained cyclic β-enaminoketonato ligands, [RC₆H₃-(O)C=C(CH₂)_nCH=NC₆H₄SPh]VC_l2(THF) (2a, n =1, R = H; 2b, n =1, R = C₆H₅; 2c, n = 2, R = C₆H₅; 2d, n = 3, R = C₆H₅), were synthesized and characterized, and the molecular structures of complexes 2b and 2c were further confirmed by X-ray crystal analysis. In the presence of ethyl trichloroacetate as reactivating agent, Et₂AlCl activated vanadium complexes produced polyethylenes with unimodal distribution (PDI = 1.4-1.8) in high activities (10⁷-10⁸ g_PE/mol_{V•hview more»}

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