Thermal Behaviour of New Zinc(II) Bromobutyrate Complex Compounds |
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| Authors: | K Györyová J Kovářová M Melník E Andogová |
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| Institution: | (1) Department of Inorganic Chemistry, P. J. Šafárik University, Moyzesova 11, Košice SK, 041 54, Slovak Republic;(2) Institute of Macromolecular Chemistry ASCR, Heyrovského nám. 2, Prague 6 CZ, 162 06, Czech Republic;(3) Department of Inorganic Chemistry, Technical University, Radlinského 9, Bratislava SK, 812 37, Slovak Republic |
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| Abstract: | New zinc bromobutyrate complexes of general formula ZnX2·1−L·nH2O (X=CH2Br(CH2)2COO−; CH3CH2CHBrCOO−) containing one or two molecules of caffeine, nicotin-amide and phenazone as ligands (L) were prepared.
The compounds were characterized by MS-, IR- spectroscopy, chemical and thermal analysis. The thermal decomposition of hydrated
compounds starts by the release of water molecules. In anhydrous compounds the loss of organic ligands takes place followed
by the decomposition of the bromobutyrate anion at higher temperatures. Zinc bromide was found among the final products of
thermal decomposition. Water, carbon monoxide, propylaldehyde, vinylaldehyde and formaldehyde were detected in the gaseous
products of the thermally decomposed samples on heating up to 700°C.
This revised version was published online in August 2006 with corrections to the Cover Date. |
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| Keywords: | bromobutyrate caffeine nicotinamide phenazone thermal behaviour zinc complex compounds |
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