Evolution of physical and photocatalytic properties of new Zn(II) and Ru(II) complexes

Synthesis of Zn(II) and Ru(II) complexes were reported by using N-4-macrocyclic Schiff base ligands under solvothermal conditions. The newly synthesized Zn(II) and Ru(II) complexes have been characterized by various physico-chemical techniques such as elemental analysis, molar conductance, HRMS, TGA, FESEM, UV-Vis, FT-IR, H-1 NMR, and cyclic voltammetry. By using molar conductance studies, the complexes are formulated as [Zn(TPTTP)]Cl-2 and [Ru(TPTTP)Cl-2]. C-H bond activation of an sp a group of methylstyrenes (converted into cinnamaldehydes) and C-H bond activation of the sp(2) bond of polycyclic aromatic hydrocarbons through photooxidation was examined in the presence of Zn(II) and Ru(II) complexes. Reusable activity studies and photostability of catalyst are investigated by using UV-Vis spectra. Based on the results, higher catalytic activity of [Ru(TPTTP)Cl-2] complex than [Zn(TPTTP)]Cl-2 complex in both C-H bond activation and photooxidation of aromatic hydrocarbons has been reported. (C) 2019 Elsevier Ltd. All rights reserved.