Chinese Journal of Applied Chemistry ›› 1993, Vol. 0 ›› Issue (3): 8-11.

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SYNTHESIS AND CHARACTERIZATION OF LANTHANIDE COMPLEXES WITH THE SCHIFF BASE N-(3,4-DIHYDROXYBENZALIDENE)ANTHRANILIC ACID

Li Dongcheng1, Yao Kemin1, Cao Meihua1, Shen Lianfang2, Tian Qingping2   

  1. 1. Department of Chemistry, Zhejiang University, 310027 Hangzhou;
    2. Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics, Chinese Academy of Sciences, Wuhan
  • Received:1992-06-24 Revised:1992-12-02 Published:1993-06-10 Online:1993-06-10

Abstract: A Schiff base(H3L) has been obtained by the reaction of 3,4-dihydroxybenzaldehyde with anthranilic acid in ethyl alcohol. Nine complexes of this Schiff base with lanthanide ions have been synthesized in the presence of triethylamine. Elemental analysis and conductance measurements show that the complexes have the general formula of RE(L)nH2O, (RE=La,Pr,Nd,Sm,n=3;RE=Gd,Dy, Ho, Yb, Y,n=4), both Gd and Y complexes belong to that with heavier REs. No nitrate was found in the complexes. The complexes were characterized by magnetic susceptibility, TG-DTA, IR spectra and NMR measurements. The Ligand, which acts as quadriderntate, coordinates with RE(Ⅲ)in "gauche" form.

Key words: rare earth, complex, dihydroxybenzalidene anthranilic acid, synthesis