title: Spectroscopic and electrochemical studies of ruthenium and osmium complexes of salicylideneimine-2-thiophenol Schiff base.
abstract: The reactions between [M(3)(CO)(12)], M = Ru and Os, and salicylideneimine-2-thiophenol Schiff base in THF under reflux gave [Ru(CO)(4)(satpH)] and [Os(CO)(3)(satpH(2))] complexes. Structures of the two complexes were proposed on the basis of spectroscopic studies. Magnetic study of [Ru(CO)(4)(satpH)] suggested that a change in oxidation state of the ruthenium atom from zero to +1 was achieved via oxidative addition of the SH group with a proton displacement to give a low-spin d(7) electronic configuration. UV-Vis spectra of the two complexes in different solvents exhibited visible bands due to metal-to-ligand charge transfer. Electrochemical investigation of the free ligand and complexes showed some cathodic and anodic irreversible peaks due to interconversions through electron transfer.
authors.affiliation: Chemistry Department, Faculty of Science, Ain Shams University, Cairo, Egypt.
authors.forename: M M H
authors.initials: MM
authors.lastname: Khalil
authors.forename: M M
authors.initials: MM
authors.lastname: Aboaly
authors.forename: R M
authors.initials: RM
authors.lastname: Ramadan
mesh_terms: D004563:Electrochemistry; D015394:Molecular Structure; D009992:Osmium / Q000737:chemistry*; D010636:Phenols / Q000737:chemistry*; D012428:Ruthenium / Q000737:chemistry*; D012545:Schiff Bases / Q000737:chemistry*; D012997:Solvents; D013057:Spectrum Analysis
chemical_list: D010636:Phenols; D012545:Schiff Bases; D012997:Solvents; C500443:salicylideneimine-2-thiophenol; D009992:Osmium; D012428:Ruthenium