Abstract
Three Cu(II) complex compounds with 4-methoxybenzaldehyde-2-benzothiazolyl hydrazone(HL) have been prepared and characterized by elemental and thermogravimetrical analysis, infrared, electronic and EPR spectra. The complex compounds have various composition and stereochemistry, depending on the reaction conditions and the metal salt used. The ligand acts as neutral bidentate NN donor in the complexes [Cu(HL)2(H2O)2] . Cl2 and [Cu(HL)2(H2O)Br] . Br and monobasic bidentate donor in the complex [Cu2L4]. EPR studies of the complexes gave axial symmetry, with dx2-y2 the ground state. The bonding parameters calculated from the electronic and EPR spectra indicate strong in-plane p-bonding for all the complexes. Investigations on antibacterial and antifungal activities show that the complexes are more active than the free ligand.
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