Thermal stability of some new complex compounds with alylacetoacetate as ligand |
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| Authors: | M Badea R Olar D Marinescu G Vasile S Stoleriu |
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| Institution: | (1) University of Bucharest, Faculty of Chemistry, Department of Inorganic Chemistry, 90-92 Panduri St., 050663 Sector 5, Bucharest, Romania;(2) University of Bucharest, Faculty of Chemistry, Department of Inorganic Chemistry, 90-92 Panduri St., 050663 Sector 5, Bucharest, Romania;(3) University of Bucharest, Faculty of Chemistry, Department of Inorganic Chemistry, 90-92 Panduri St., 050663 Sector 5, Bucharest, Romania;(4) University of Agronomical Sciences and Veterinary Medicine, Department of Agrochemistry, Bd. Marasti 59, Bucharest, Romania;(5) University  Politehnica Bucharest, Faculty of Industrial Chemistry, S.I.M.O. Department, P.O. Box 12-134, 011061 Bucharest, Romania |
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| Abstract: | Summary This paper reports the investigation of the thermal stability of two new complexes with allylacetoacetate anion, Cu(C7H9O3)2 (1) and Ni(C7H9O3)2(OH2)2 (2), respectively. The bonding and stereochemistry of the complexes have been characterized by IR, electronic and EPR spectra. The main decomposition steps were evidenced. The two complexes exhibit a different thermal behaviour. Thus, the copper complex suffers an oxidative degradation of allylacetoacetate ligand leading to copper carbonate, which is decomposed to copper oxide. The Ni(II) complex lose the water molecules first and then the organic ligand decomposition occurs. An intermediary malonaldehyde complex seems to be obtained. Complex (1) presents in vitro antimicrobial activity. |
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| Keywords: | thermal stability Cu(II) complex allylacetoacetate anion Ni(II) complex |
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