Transition metal complexes with oxygen donor ligands: A synthesis, spectral, thermal and antimicrobial study
Author(s) -
V. N. Patange,
Rajendra K. Pardeshi,
Balasaheb R. Arbad
Publication year - 2008
Publication title -
journal of the serbian chemical society
Language(s) - English
Resource type - Journals
eISSN - 1820-7421
pISSN - 0352-5139
DOI - 10.2298/jsc0811073p
Subject(s) - chemistry , dehydroacetic acid , transition metal , thermal decomposition , metal , thermogravimetry , nuclear chemistry , inorganic chemistry , organic chemistry , catalysis
Transition metal complexes of chalcones derived from the conden- sation of 3-acetyl-6-methyl-2H-pyran-2,4(3H)-dione (dehydroacetic acid) and p-methoxybenzaldehyde (HL1) or p-nitrobenzaldehyde (HL2) were synthesized and characterized by elemental analysis, conductometry, thermal analysis, mag- netic measurements, IR, 1H-NMR, UV-Vis spectroscopy and a microbial study. From the analytical and thermal data, the stoichiometry of the complexes was found to be 1:2 (metal:ligand). The molar conductance data revealed that all the metal chelates were non-electrolytes. The thermal stability of the complexes was studied by thermogravimetry and the decomposition schemes of the complexes are given. The ligands and their metal complexes were screened for antibac- terial activity against Staphylococcus aureus and Escherichia coli, and fungici- dal activity against Aspergillus flavus, Curvularia lunata and Penicillium notatum.
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