Synthesis, Characterisation and Biological Evaluation of Lanthanide(III) Complexes with 3-Acetylcoumarin-o-aminobenzoylhydrazone (ACAB)
作者:Kalagouda B. Gudasi、Rashmi V. Shenoy、Ramesh S. Vadavi、Manjula S. Patil、Siddappa A. Patil
DOI:10.1248/cpb.53.1077
日期:——
Lanthanide(III) complexes of the general formula [Ln(ACAB)2(NO3)2(H2O)2]·NO3·H2O where Ln=La(III), Pr(III), Nd(III), Sm(III), Eu(III), Gd(III), Tb(III), Dy(III) and Y(III), ACAB=3-acetylcoumarin-o-aminobenzoylhydrazone have been isolated and characterised based on elemental analyses, molar conductance, IR, 1H- and 13C-NMR, UV, TG/DTA and EPR spectral studies. The ligand behaves in bidentate fashion coordinating through hydrazide >C=O and nitrogen of >C=N. A coordination number of ten is assigned to the complexes. Antibacterial and Antifungal studies indicate an enhancement of activity of the ligand on complexation.
根据元素分析、摩尔电导率、红外光谱、1H-和13C-核磁共振、紫外光谱、热重分析/差热分析和电子顺磁共振光谱研究,分离并鉴定了通式为[Ln(ACAB)2(NO3)2(H2O)2]·NO3·H2O的镧系(III)配合物,其中Ln=La(III)、Pr(III)、Nd(III)、Sm(III)、Eu(III)、Gd(III)、Tb(III)、Dy(III)和Y(III),ACAB=3-乙酰基香豆素-邻氨基苯甲酰腙。配体以双齿方式通过酰肼>C=O和>C=N的氮进行配位。配体的配位数为10。抗菌和抗真菌研究表明,配体在配合物中的活性增强。