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Synthesis and characterization of new complexes of some divalent transition metals with N-isonicotinamido-4-chlorobenzalaldimine

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Author(s): LUCICA VIORICA ABABEI | ANGELA KRIZA | CRISTIAN ANDRONESCU | ADINA MAGDALENA MUSUC

Journal: Journal of the Serbian Chemical Society
ISSN 0352-5139

Volume: 76;
Issue: 8;
Start page: 1103;
Date: 2011;
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Keywords: N-isonicotinamido-4-chlorobenzalaldimine | template synthesis | transi­tion metal complexes | thermal analysis

ABSTRACT
New complexes of N-isonicotinamido-4-chlorobenzalaldimine (INHCBA) with Cu(II), Co(II) and Cd(II), having formula of the type [M(INHCBA)(ac)2]·xH2O (M = Cu2+, x = 1, M = Co2+, x = 2, M = Cd2+, x = 0, ac = CH3COO-), and with Cu(II), Mn(II) and Zn(II), having formula of the type [M(INHCBA)2(H2O)2]SO4·xH2O (M = Cu2+, Mn2+, x = 2 and Zn2+ x = 2.5) were synthesized and characterized by analytical and physico-chemical techniques, i.e., elemental analyses, IR, UV–Vis–NIR and EPR spectroscopy as well as thermal analysis and the determination of the molar conductivity and magnetic moments. The thermal behaviour of complexes was studied by ther­mogravimetry (TG), differential thermal analysis (DTA) and differential scan­ning calorimetry (DSC). The ligand behaves as bidentate NO, being coordi­nated through the azomethine nitrogen and carbonylic oxygen. The heats of decomposition, ΔH, associated with the exothermal effects, were also deter­mined.
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