Synthesis, characterization and NLO property of ruthenium(II) thiosemicarbazone complexes

Abstract

Nonlinear optical (NLO) materials have attracted considerable attention with potential applications as optical switching, data storage and optoelectronic devices. Compared with inorganic counterparts, organic complexes owing to its structural flexibility are received growing interest. With this forefront investigations, we herein report synthesis of a set of ruthenium complexes containing Schiff base, ethoxy-methylthiosemicarbazone, and non Schiff base ligands with available metal precursors. The synthesized ligands and the ruthenium complexes were characterized by various analytical and spectrochemical techniques viz., FT-IR, UV-Vis, 1HNMR, 13CNMR and 31PNMR. All the physio-chemical and spectral techniques confirmed that the ruthenium atom is in +2 oxidation state and an octahedral geometry is proposed to all the complexes. The spectral techniques reveals that the ruthenium atom in the complexes coordinated to Schiff base ligand through Oxygen:Nitrogen:Sulphur (ONS) mode. Further, the nonlinear optical property of the compounds was investigated by kurtz-perry powder technique which through a light on the materialistic properties of the ruthenium complexes.Nonlinear optical (NLO) materials have attracted considerable attention with potential applications as optical switching, data storage and optoelectronic devices. Compared with inorganic counterparts, organic complexes owing to its structural flexibility are received growing interest. With this forefront investigations, we herein report synthesis of a set of ruthenium complexes containing Schiff base, ethoxy-methylthiosemicarbazone, and non Schiff base ligands with available metal precursors. The synthesized ligands and the ruthenium complexes were characterized by various analytical and spectrochemical techniques viz., FT-IR, UV-Vis, 1HNMR, 13CNMR and 31PNMR. All the physio-chemical and spectral techniques confirmed that the ruthenium atom is in +2 oxidation state and an octahedral geometry is proposed to all the complexes. The spectral techniques reveals that the ruthenium atom in the complexes coordinated to Schiff base ligand through Oxygen:Nitrogen:Sulphur (ONS) mode. Further, the nonlinear optical p...