Mycobiology.  2007 Sep;35(3):150-153. 10.4489/MYCO.2007.35.3.150.

Synthesis and Spectral Characterization of Antifungal Sensitive Schiff Base Transition Metal Complexes

Affiliations
  • 1Research Department of Chemistry, VHNSN College, Virudhunagar-626 001, India. drn_raman@yahoo.co.in

Abstract

New N2O2 donor type Schiff base has been designed and synthesized by condensing acetoacetanilido-4-aminoantipyrine with 2-aminobenzoic acid in ethanol. Solid metal complexes of the Schiff base with Cu(II), Ni(II), Co(II), Mn(II), Zn(II), VO(IV), Hg(II) and Cd(II) metal ions were synthesized and characterized by elemental analyses, magnetic susceptibility, molar conduction, fast atom bombardment (FAB) mass, IR, UV-Vis, and 1H NMR spectral studies. The data show that the complexes have the composition of ML type. The UV-Vis. and magnetic susceptibility data of the complexes suggest a square-planar geometry around the central metal ion except VO(IV) complex which has square-pyramidal geometry. The in vitro antifungal activities of the compounds were tested against fungi such as Aspergillus niger, Aspergillus flavus, Rhizopus stolonifer, Candida albicans, Rhizoctonia bataicola and Trichoderma harizanum. All the metal complexes showed stronger antifungal activities than the free ligand. The minimum inhibitory concentrations (MIC) of the metal complexes were found in the range of 10~31 microg/ml.

Keyword

Schiff base; Square-planar; Transition metal complexes

MeSH Terms

Aspergillus flavus
Aspergillus niger
Candida albicans
Coordination Complexes*
Ethanol
Fungi
Humans
Ions
Microbial Sensitivity Tests
Molar
Rhizoctonia
Rhizopus
Schiff Bases*
Tissue Donors
Trichoderma
Coordination Complexes
Ethanol
Ions
Schiff Bases
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