Binuclear half-sandwich ruthenium(II) Schiff base complexes: Synthesis, characterization, DFT study and catalytic activity for the reduction of nitroarenes

Publication date: Available online 18 October 2019Source: Journal of Organometallic ChemistryAuthor(s): Raja Nandhini, Bellie Sundaram Krishnamoorthy, Galmari VenkatachalamAbstractThe binuclear ruthenium(II) p-cymene complexes containing Schiff base ligands of general composition [(Ru(p-cymene)Cl)2L1-6] (1-6) have been synthesized. The complexes were characterized by analytical and spectral (FT−IR, UV–Vis & 1H NMR) methods. The molecular structure of the representative complex [(Ru(p-cymene)Cl)2(L6)] (6) was determined by single-crystal X-ray diffraction and density functional theory (DFT) calculations. Further, these half-sandwich ruthenium complexes are active catalysts for the mild hydrogenation of nitroarenes to aromatic anilines in the presence of NaBH4 in ethanol. The most efficient catalyst 6, was found be compatible with nitroarenes of various functional groups.Graphical abstract

Source: Journal of Organometallic Chemistry - October 19, 2019 Category: Chemistry Source Type: research