Using ethylenediamine o-vanillin Schiff base and rare earth nitrates as raw materials,anhydrous ethanol as a solvent,seven kinds of rare earth complexes with ethylenediamine o-vanillin Schiff base were synthesized by heating,stirring and refluxing.The structures of these complexes were characterized by elemental analysis,XRD,IR,UV,molar conductivity,TG-DTA analyses and so on.Results showed that these complexes had general chemical formula[REL(NO3)2]NO3,the stoichiometry of the complexes was found to be 1∶1(...