Abstract

The reaction of the Bispyridyl Isoindole (BPI) type ligands L1 and L2 ( L1 = 1,3-Bis(2-(4- tert-butylpyridyl)imino) isoindole, L2 = 1,3-Bis(2-(5-bromo)imino)-5,6-dimethylisoindole) with [Ru(μ-Cl) 2(cod)] x in presence of triethylamine using coordinating solvents like acetonitrile, dimethyl sulfoxide or pyridine cleanly gave the complexes [{BPI( L1, L2)}Ru II(Cl)(S) 2] ( L1: S = acetonitrile ( 1), dimethyl sulfoxide ( 2), pyridine ( 3); L2: S = acetonitrile ( 4), dimethyl sulfoxide ( 5), pyridine ( 6)). In these complexes the BPI ligands meridionally coordinated to the ruthenium center as established by X-ray diffraction for complexes 3 and 6. The catalytic activity in the direct ATRP (Atom Transfer Radical Polymerization) of styrene was tested for complexes 1– 6.

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