摘要
A new unsymmetrical Schiff base ligand (H2LLi) was synthesized using L-lysine, salicylaldehyde and 2-hydroxy-1-naphthaldehyde. Three solid metal complexes of this ligand \[Ln(H2L)(NO3)\] NO3·2H2O (Ln=La, Sm, Ho) have been prepared and characterized by elemental analyses, IR spectra, UV spectra, TG-DTG and molar conductance. The antibacterial activities of the ligand and its complexes are also studied. The antibacterial experiments indicate that the ligand and its complexes possess antibacterial activity against Escherichia coli, Staphylococcus aureus and Bacillus subtilis and that the complexes have higher activity than those of the ligand.
A new unsymmetrical Schiff base ligand （H2LLi） was synthesized using L-lysine, salicylaldehyde and 2-hydroxy- 1-naphthaldehyde. Three solid metal complexes of this ligand [Ln（H2L）（NO3）] NO3·2H2O （Ln = La, Sm, Ho） have been prepared and characterized by elemental analyses, IR spectra, UV spectra, TG-DTG and molar conductance. The antibacterial activities of the ligand and its complexes are also studied. The antibacterial experiments indicate that the ligand and its complexes possess antibacterial activity against Escherichia coli, Staphylococcus aureus and Bacillus subtilis and that the complexes have higher activity than those of the ligand.
关键词
氨基酸
不对称性
合成工艺
海水化学
抗菌性
unsymmetrical Schiff base
Ln（Ⅲ） complex
synthesis
characterization
antibacterial action
