Ruthenium(II) complexes with pyridine-based Schiff base ligands: Synthesis, structural characterization and catalytic hydrogenation of ketones

Abstract

This study investigated the synthesis and characterization of which the result of the reaction of Schiff base ligands containing pyridine with [RuCl2(p-cymene)](2). The spectroscopic techniques used for the characterization process were the elemental analysis, mass spectroscopy, FT-IR, UV-Vis and H-1 and C-13 NMR. The results showed that Ru(II) complexes occured through the coordination of azomethine N, carbonyl and hydroxyl O atoms of the ligands. Ru(II) complexes were utilized as catalysts for the transfer hydrogenation of a series of ketones in the i-propanol solution and in the presence of KOH. The catalytic reactions indicated that the Ru(II) complexes (1a-d) were effective catalysts in the transfer hydrogenation reaction. (C) 2019 Elsevier B.V. All rights reserved.