标题：SYNTHESIS, SPECTROSCOPIC CHARACTERIZATION, ELECTROCHEMICAL AND ANTIMICROBIAL STUDIES OF COPPER (II), NICKEL (II), COBALT (II), ZINC (II) AND OXOVANADIUM (II) COMPLEXES DERIVED FROM NAPTHYLIDENE-4-AMINOANTIPYRINE AND TRYPTOPHAN
期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2015
卷号：4
期号：12
页码：12221
DOI：10.15680/IJIRSET.2015.0412103
出版社：S&S Publications
摘要：Neutral tetradentate N2O2 complexes of Cu(II), Ni(II), Co(II), VO(II) and Zn(II) have been synthesizedfrom napthylidene-4-aminoantipyrine and tryptophan. All the complexes were characterized by elemental analysis,molar conductance, magnetic susceptibility data, IR, 1H-NMR, UV-Vis., FAB-Mass and ESR spectral studies. Thephysico-chemical studies and spectral data indicate that the ligand act as a divalent tetradentate chelating agents. All thecomplexes have the general composition [ML] (where, M= Cu(II), Ni(II), Co(II), VO(II) and Zn(II), L = Schiff base).The IR, UV-Vis., magnetic susceptibility and ESR spectral data of the complexes suggest that all the complexes aresquare planar geometry around the central metal ion except VO(II) complexes which exhibit square pyramidalgeometry. The lower conductance data confirms the non-electrolytic nature of the complexes. The effect of redoxpotential on metal ion by the ligand environment is studied by cyclic voltametric measurements. These redox studies ofcopper complexes suggest that the ligand system stabilises the unusual oxidation states Cu(III), Cu(I) and Cu(0) underelectrochemical condition. The Schiff bases and their metal complexes are utilized to test the in vitro antimicrobialactivities, which give good results in the presence of metal ion than the free ligand environment against the differentspecies of microorganisms.
