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Synthesis, Characterization and Catalytic Properties of Some New Ruthenium (III) Complexes Incorporating O,N-donor ligands


Abdel Ghany Farag Shoair


Department of Chemistry, Faculty of Science, Gazan University, King Saudi Arabia

Email: abdel_shoair@yahoo.com



As a part of our work on ruthenium complexes [1-2], we report herein the synthesis and characterization of some stable ruthenium(III) and ruthenium(II) complexes containing some O,N-donor ligands. The  complexes, cis-[Ru(bipy)2L](PF6)2 and [RuCl2L2]Cl [bipy = 2,2'-bipyridyl and L = 2-aminophenol (2-aph), 8-hydroxyquinoline (8-hq) and 4-aminoantipyrine (4-aapy)] were characterized by elemental analysis, spectroscopic (IR, UV-VIS, 1H NMR, ESR), cyclic voltammeteric and magnetic techniques. The ligand  field parameters, ∆o  splitting parameter, B (Racah parameter o  interelectronic repulsion), and β (nephelauxetic ratio) were calculated. The redox properties were also investigated by cyclic voltammetry.  The complexes cis-[Ru(bipy)2(8-hq)](PF6)and  [RuCl2(8-hq)2]Cl have been used  in conjunction with  N-methyl morpholine-N-oxide (NMO) as co-oxidant for catalytic dehydrogenation of  benzylamine to benzonitrile at room temperature.


Keywords: ruthenium; catalytic dehydrogenation; N-methylmorpholine-N-oxide (NMO)



1.   A.F. Shoair, J. Coord. Chem. 60 (2007) 1101.

2.   A.F. Shoair, R.H. Mohamed, J. Coord. Chem. 60 (2007) 1279.