Thermal behaviour of zinc(II) salicylate complex compounds

0189259 - UMCH-V 20033214 RIV SK eng C - Conference Paper (international conference)
Györyová, K. - Chomič, J. - Kovářová, Jana
Thermal behaviour of zinc(II) salicylate complex compounds.
Booklet of Conference. Bratislava: Slovak University of Technology, 2003 - (Fajnor, V.; Smrčková, E.; Šimon, P.), s. SL3-1-SL3-5. ISBN 80-227-1955-2.
[Conference on Thermal Analysis and Calorimetry /16./. Stará Lesná (SK), 08.10.2003-10.10.2003]
R&D Projects: GA AV ČR KSK4050111
Grant - others:Slovak Ministry of Education(SK) VEGA 1/9247/02
Institutional research plan: CEZ:AV0Z4050913
Keywords : Zinc(II) complexes * organic ligands * thermal behaviour
Subject RIV: CD - Macromolecular Chemistry

Some of zinc(II) complex compounds with organic ligands are known to be biologically active. New zinc (II) salicylate complexes of the general formula Zn(Hsal)2 L2 4H2O (where Hsal = OHC6H4COO- , L = nicotinamide(nam), caffeine(caf)) were therefore prepared and characterized by means of IR spectroscopy and elemental analysis. Thermal behaviour of the newly synthetized compounds depend on the character of the attached organic ligand. Dehydration takes place between 80 - 120 C, followed by the release of organic ligands in the temperature range 170 - 280 and 280 - 320C. Subsequently, salicylic acid molecule is evolved while phenolic group is deprotonized. Thermal decomposition continues in the range 380 - 500C where CO2 and water are released and zinc oxide is formed as the final solid product of thermal decomposition of all studied complexes.
Permanent Link: http://hdl.handle.net/11104/0085084