钐(Ⅲ)与不对称希夫碱配合物的合成、表征和热分解反应动力学

A new unsymmetrical Schiff base zwitterion （Ⅲ） was synthesized using L-lysine, salicylaldehyde and 2-hydroxy-l-naphthaldehyde. Samarium（Ⅲ） complex of this ligand [SmL（NO3）]NO3·2H2O has been prepared and characterized by elemental analyses, IR, UV 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 dα/dt=3/2Ae^E/RT（1-α）^2/3[1-（1 -α）^1/3）]^-1. The kinetic parameters （E, A）, activation entropy △S^x and activation free-energy △G^x were also gained.