Mandzii T. Coordination compounds of 3d-metals carboxylates with arylcarboxylic acids hydrazides

The work is devoted to the synthesis and establishment of the structure and properties of the coordination compounds of cobalt(II), nickel(II), copper(II) and zinc carboxylates with arylcarboxylic acids hydrazides. The interaction of valerates, benzoates, malonates, phthalates, salicylates and 5-sulfosalicylates with benzoic, phenylacetic and isonicotinic acids hydrazides was investigated, their interaction products were identified and characterized by the methods of elemental analysis, thermogravimetry, X-ray diffraction, IR, ESR, diffuse reflectance spectroscopy, magnetochemistry, and photoluminescence properties were studied. In total 52 compounds are described. The biological activity of cobalt and nickel benzhydrazide complexes towards a number of microorganisms was revealed. Fungicidal properties are stronger than antimicrobial ones. Gram-negative bacteria exhibit less activity than gram-positive ones, for which the sensitivity of microorganisms decreases in an order: Micrococcus luteus ˃ Enterococcus faecalis ˃Staphylococcus aureus ˃Bacillus subtilis.