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Citation: YUAN Wen-Bing, YAN Lan, YANG Ru-Dong. Synthesis and Characterization of Mononuclear Complexes of Tripodal Schiff-base with Lanthanide and Antioxidative Activity of the Ligand[J]. Chinese Journal of Applied Chemistry, ;2004, 21(8): 829-831. shu

Synthesis and Characterization of Mononuclear Complexes of Tripodal Schiff-base with Lanthanide and Antioxidative Activity of the Ligand

1.
Department of Chemistry, Lanzhou University, Lanzhou 730000

Corresponding author: YAN Lan,
Received Date: 26 September 2003
Available Online: 28 December 2003
Fund Project:

The synthesis of a tripod Schiff-base ligand and its eight complexes with rare earth metals are reported. All compounds were characterized by elemental analysis, IR, ¹H NMR, TG-DTA and molar conductance measurements. The results show that these complexes[LnL(NO₃)₂]NO₃·nH₂O(n=3,Ln=La,Sm,Eu,Gd; n=4, Ln=Tb,Dy,Yb,Y) are 1:1 electrolyte, where one nitrate radical is free, the other two nitrate radicals are in mono-dentate coordination with Ln(Ⅲ) ions; the coordination number is 9. The ligand exhibits good antioxidative activity at concentration of 1×10^-4 mol/L.
- lanthanide,
- Schiff-base,
- complex,
- antioxidative activity
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