Abstract
Reaction of [Ru(PPh3)3Cl2] with 2-(methylthio)phenylsalicylaldimine Schiff-base (HL) in tetrahydrofuran (THF) in the presence of triethylamine afforded a ruthenium(II) complex [Ru(ONS-L)(PPh3)2Cl]·CH3OH·2.75H2O (1). Similarly, reaction of [Ru(CO)2Cl2] with HL in N,N′-dimethylformamide (DMF) in the presence of triethylamine gave a ruthenium(II) complex [Ru(ONS-L)(CO)2Cl] (2), while the reaction between [Ru(CO)2Cl2] and HL without base resulted in a ruthenium(III) complex [Ru(ONS-L)(CO)Cl2] (3). Treatment of RuCl3·3H2O with HL in ethanol in the presence of triethylamine gave an anionic complex [Et3NH][Ru(ONS-L)Cl3] (4), which reacted with [Cp∗2Ru] in the presence of sodium hydroxide to give complex [Cp∗Ru(η6-1,2,3,4-Me4C6H2)][Ru(ONS-L)Cl3]·CH2Cl2 (5) with a different cation. Besides, reaction of 4 and AgNO3 afforded a dinuclear ruthenium(II) complex [Ru2(ONS-L)(μ-ONS-L)2Cl]·CH2Cl2 (6). The structures of complexes 1–6 have been established by X-ray crystallography, of which complex 4 was selected as a catalyst for the typical oxidation of 1-phenylethanol to the according acetophenone.
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