Osmium-hydride-carbonyl complex with thioether containing Schiff base ligand: Synthesis, crystal structure, electrochemistry and catalytic transfer hydrogenation
A new osmium(II) carbonyl complex, [Os(H)(CO)(PPh3)2(L)] (1) with thioether containg NNS donor ligand (where L = 2-(ethylthio)-N-((pyridine-2-yl)methylene))benzenamine) is synthesized and characterized by various spectroscopic techniques. The distorted octahedral environment around osmium in the complex is confirmed by single crystal X-ray structure. Cyclic voltammogram in acetonitrile exhibits Os(II)/Os(III)
tricarbonyl complexes fac -[Re(CO) 3 (L 1 /L 2 )Cl] ( 1a/1b ) (L 1 = 2-(methylthio)-N-((pyridine-2-yl)methylene)benzenamine and L 2 = 2-(ethylthio)-N-((pyridine-2-yl)methylene)benzenamine). The Schiff base ligands L 1 and L 2 have been synthesized and characterized by elemental and spectroscopic analysis. Along with spectral characterizations, the structural confirmation by single crystal X-ray study has