Abstract
Novel complexes of Ru(III), Pd(II), Th(IV), UO2(VI), and Sn(IV) of 2-anilino-N[(1E)(2-hydroxyphenyl)methylene] acetohydrazide (H2L) have been synthesized and characterized by elemental analyses, spectral (FT-IR, 1H NMR, and MS) studies, molar conductivity measurements, and thermal analysis (DTA/TG) techniques. Spectral studies show that the ligand displays different coordination mode with metal ions. Thermal studies reveal that Pd(II) complex has higher thermal stability than UO2(VI), Sn(IV), Th(IV), and Ru(III) complexes. The kinetic and thermodynamic activation parameters of decomposition processes of metal complexes, namely activation energy (E*), enthalpy (ΔH*), entropy (ΔS*), and Gibbs free energy (ΔG*), were evaluated graphically from TG curve by employing the Coats–Redfern relation.