Thermal, spectral and antimicrobial properties of new zinc(II) isobutyrate compounds -: Part I.: Papaverine, phenazone

Zinc carboxylate complexes with N-donor ligands exhibit antimicrobial and antifungal effects. The preparation and thermal properties of complex compounds Zn(isobut)(2) and Zn(isobut)(2)L (isobut=(CH3)(2)CHCOO-, L=papaverine - pap, phenazone - phen) are described in this paper. The newly synthesized compounds were characterized by elemental analysis, IR spectroscopy and TG/DTG, DTA methods. During the thermal treatment it was found that the release of organic ligands (pap, phen) was followed by pyrolysis of zinc(II) isobutyrate. (C3H7)(2)CO and CO2 were found as gaseous products and zinc oxide as the final product of thermal decomposition. Gaseous and solid products of thermal decomposition were confirmed by chemical analysis, IR spectra and X-ray powder diffraction.