Synthesis and thermal conversions of unsaturated cobalt(II) dicarboxylates as precursors of metallopolymer nanocomposites

The synthesis and IR spectroscopic and thermoanalytical study of cobalt(II) hydrogen salts with unsaturated dicarboxylic acids, such as maleic, itaconic, acetylenedicarboxylic, allylmalonic, glutaconic, and cis -, cis -muconic acids, were performed. Co 3 O 4 polymer based nanocomposites were prepare...

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Bibliographic Details
Published in:Russian journal of inorganic chemistry 2015-08, Vol.60 (8), p.897-905
Main Authors: Semenov, S. A., Drobot, D. V., Musatova, V. Yu, Pronin, A. S., Pomogailo, A. D., Dzhardimalieva, G. I., Popenko, V. I.
Format: Article
Language:English
Subjects:
Carboxylates
Chemistry
Chemistry and Materials Science
Coercive force
Inorganic Chemistry
Magnetization
Nanocomposites
Nanoparticles
Quantum chemistry
Synthesis
Synthesis and Properties of Inorganic Compounds
Unsaturated
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Summary:The synthesis and IR spectroscopic and thermoanalytical study of cobalt(II) hydrogen salts with unsaturated dicarboxylic acids, such as maleic, itaconic, acetylenedicarboxylic, allylmalonic, glutaconic, and cis -, cis -muconic acids, were performed. Co 3 O 4 polymer based nanocomposites were prepared through the thermal decomposition of the carboxylates synthesized. The size distribution of nanoparticles and their average diameter ( d avg ) were determined. The formation enthalpies of cobalt hydrogen carboxylates (Δ H p o ) were calculated using the PM3 semi-empirical quantum-chemical method. A correlation between d avg and Δ H p o was established. The magnetic characteristics of the synthesized composites, namely the maximum residual magnetization and coercive force, were determined. The critical diameter of nanoparticles for their transition from multidomain to one-domain particles was found to be 3.8 nm.
ISSN:0036-0236
1531-8613
DOI:10.1134/S0036023615080161