Synthesis and thermal decomposition kinetics of Gd(III) complex with unsymmetrical Schiff base Ligand

Article abstract of DOI:10.14233/ajchem.2013.13624

A new unsymmetrical solid Schiff base (LLi) was synthesized using L-lysine, o-vanillin and 2-hydroxy-l-naphthaldehyde. Solid gadolinium(III) complex of this ligand [GdL(NO₃)]NO₃2H₂O has been prepared and characterized by elemental analyses, IR spectra, 1H NMR spectra, UV spectra and molar conductance. The thermal decomposition kinetics of the complex for the second stage was studied under non-isothermal condition by TG and DTG methods. The kinetic equation may be expressed as: d?/dt = Ae-E/RT(1-?α) ₃. The kinetic parameters (E, A), activation entropy δS≠and activation free-energy δG≠were also gained.