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1 Polish Journal of Chemistry

1 1999

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Preparation, spectral properties and antimicrobial effects of new Cu(II) compounds with some bio-active ligands

Mojumdar S., Hudecova D., Melnik M.

Polish Journal of Chemistry

1999

vol. 73 nr 5

759-764

The compounds [Cu(ac)2(Et2na)]2 × Et2na × 2H20 (I), Cu(Clac)2(Et2na)3 (II), Cu(Cl2ac)2(Et2na)2 × 2H20 (III), [Cu(ac)2mpc]2 × 2CH3OH (IV), Cu(Clac)2(mpc) (V), Cu(Cl2ac)2(mpc)2 (VI), Cu(Cl3ac)2(mpc)2 (VII), Cu(pc) × 5h2O (VIII), where ac=CH3Coo-, Clac=ClCH2COO-, Cl2ac=Cl2CHCOO-, Cl3ac=Cl3CCOO-, Et2na=N,N-diethylnicotinamide, mpc= methyl-3-pyridyl carbamate and pc=2,6-pyridinedicarboxylate have been prepared and characterized by elemental analysis, IR, EPR and electronic spectra. Their antimicrobial effects have been tested on various fungal strains. Significant morphological changes of Botrytic cinerea were observed by the compounds V and VII. The highest antimicrobial effects were manifested by compound IV. IC50 and MIC of that compound are 220 and 1000 mg/ml against Rhizopus oryzae, 250 and 500 mg/ml against Microsporum gypseum, respectively. IR data suggest a unidentate coordination of carboxylate to Cu(II). Et2na and mpc were coordinated through the N atom of the heterocyclic rings. EPR spectra suggest a diametric structure of complexes I and IV and monomeric structure of complexes II, III, V-VIII.