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Molecular design of new magnetically active copper complexes with heteroaromatic schiff bases and azo compounds

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Abstract

Copper chelates with tridentate ligands containing pyridine or pyrazole ring at the azomethine or azo fragment were synthesized by chemical electrochemical methods, and their structure was characterized by the EXAFS spectra. Thermal magnetochemical analysis of the complexes revealed antiferromagnetic exchange interaction in all complexes. The exchange interaction parameter of the complex containing an N-tosylamino group in the ortho position with respect to the azomethine group is much lesser than that of the corresponding complex having an oxygen atom in the same position. The copper chelate derived from azopyrazole ligand shows low-temperature ferromagnetic phase transition.

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Authors and Affiliations

  1. Research Institute of Physical and Organic Chemistry, Southern Federal University, pr. Stachki 194/2, Rostov-on-Don, 344090, Russia

    A. S. Burlov, A. I. Uraev, S. A. Nikolaevskii, Yu. V. Koshchienko, I. S. Vasil’chenko, L. N. Divaeva, G. S. Borodkin & A. D. Garnovskii

  2. International Tomographic Center, Siberian Division, Russian Academy of Sciences, Novosibirsk, Russia

    V. N. Ikorskii

  3. Southern Research Center, Russian Academy of Sciences, Rostov-on-Don, Russia

    D. A. Garnovskii

  4. Research Institute of Physics, Southern Federal University, Rostov-on-Don, Russia

    V. G. Vlasenko

  5. “Kurchatovskii institute” Russian Research Center, Moscow, Russia

    Ya. V. Zubavichus

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  1. A. S. Burlov
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  2. A. I. Uraev
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  3. V. N. Ikorskii
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  4. S. A. Nikolaevskii
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  5. Yu. V. Koshchienko
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  6. I. S. Vasil’chenko
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  7. D. A. Garnovskii
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  8. V. G. Vlasenko
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  9. Ya. V. Zubavichus
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  10. L. N. Divaeva
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  11. G. S. Borodkin
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  12. A. D. Garnovskii
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Corresponding author

Correspondence to A. D. Garnovskii.

Additional information

Original Russian Text © A.S. Burlov, A.I. Uraev, V.N. Ikorskii, S.A. Nikolaevskii, Yu.V. Koshchienko, I.S. Vasil’chenko, D.A. Garnovskii, V.G. Vlasenko, Ya.V. Zubavichus, L.N. Divaeva, G.S. Borodkin, A.D. Garnovskii, 2008, published in Zhurnal Obshchei Khimii, 2008, Vol. 78, No. 6, pp. 1002–1007.

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Burlov, A.S., Uraev, A.I., Ikorskii, V.N. et al. Molecular design of new magnetically active copper complexes with heteroaromatic schiff bases and azo compounds. Russ J Gen Chem 78, 1230–1235 (2008). https://doi.org/10.1134/S1070363208060224

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  • DOI: https://doi.org/10.1134/S1070363208060224

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