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Synthesis of Multinuclear Pyridylimine Based Palladium(II) Complexes with a Functionalized Star Polystyrene Core and Evaluation of Their Catalytic Activity Towards Ethylene Oligomerization
Author(s) -
Abraham Sinoj,
Ha ChangSik,
Kim Il
Publication year - 2006
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.200600244
Subject(s) - polystyrene , palladium , methylaluminoxane , polymer chemistry , ethylene , catalysis , atom transfer radical polymerization , conjugated system , polymer , materials science , polymerization , chemistry , organic chemistry , metallocene
Summary: The synthesis of a novel series of multi‐nuclear macroligated pyridylimine based palladium(II) complexes conjugated to a synthetic star polymer core has been well‐described. Star shaped polystyrene with a finite number of arms were prepared by atom transfer radical polymerization (ATRP) and the chain ends were chemically modified in order to introduce the desired end functionality. Utilizing this polymer as organic supports for pyridylimine‐based ligands, palladium(II) complexes were synthesized. On activating with methylaluminoxane (MAO), this complex showed substantially high activity towards ethylene oligomerization, producing C 4 and C 6 compositions as major products. The plausible mechanistic insight concerning the process of ethylene oligomerization is also broached.An example of trinuclear pyridylimine based palladium(II) complex having a functionalized star polystyrene core.