Skip to main content
SpringerLink
Log in

The magnetothermal properties of substituted (tetraazoporphynato)manganese(III) in aqueous suspension

  • Photochemistry and Magnetochemistry
  • Published:
Russian Journal of Physical Chemistry A Aims and scope Submit manuscript

Abstract

The magnetocaloric effect (MCE), heat capacity, and enthalpy and entropy of magnetization of the high-spin (acetato)(2,3,7,8,12,13,17,18-octa-para-tert-butylphenyltetraazaporphynato)manganese(III) complex in a 6% aqueous suspension were determined microcalorimetrically at 298 K in magnetic fields of 0.1–1.0 T, that is, under the conditions comparable with those used with (2,3,7,8,12,13,17,18-octaethylporphynato)chloromagnanese(III) studied earlier. High-dispersity complex particles were found to have paramagnetic properties. Positive MCE values were obtained. These values grew as magnetic field induction increased. MCE sensitivity to the nature and electronic structure of the aromatic macroring was studied. The presence of aza groups in the structure of the complex decreases the MCE value compared with the porphyrin complex. The specific heat capacity of the complex strongly depended on the magnetic field value; field dependences had a maximum close to 0.3 T. Changes in the ΔS m(H, T) molar entropy part were also extremal and had maxima at 0.3–0.4 T. Prospects for the use of magnetothermal properties in the quantitative determination of thermodynamic characteristics and for revealing trends of changes in the magnetic activity of porphyrin complexes are discussed.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. V. V. Korolev, A. S. Romanov, and I. M. Arefyev, Russ. J. Phys. Chem. A 80, 310 (2006).

    Article  CAS  Google Scholar 

  2. V. V. Korolev, A. S. Romanov, and I. M. Arefyev, Russ. J. Phys. Chem. A 80, 464 (2006).

    Article  CAS  Google Scholar 

  3. V. V. Korolev, I. M. Arefyev, and A. G. Ramazanova, Russ. J. Phys. Chem. A 81, 949 (2007).

    Article  CAS  Google Scholar 

  4. V. V. Korolev, I. M. Arefyev, and A. G. Ramazanova, Ross. Nanotekhnol. 2(1), 59 (2007).

    Google Scholar 

  5. M. E. Klyueva, V. V. Korolev, I. M. Arefyev, and T. N. Lomova, J. Porphyrins Phthalocyanines 12, 584 (2008).

    Google Scholar 

  6. V. V. Korolev, I. M. Arefyev, T. N. Lomova, et al., in Proceedings of the 10th International Conference on Physics and Coordination Chemistry of Porphyrins and their Analogues (Ivanovo, 2009), p. 128.

  7. V. V. Korolev, A. S. Romanov, and I. M. Arefyev, Russ. J. Phys. Chem. A 80, 464 (2006).

    Article  CAS  Google Scholar 

  8. S. V. Vonsovskii, Magnetism (Nauka, Moscow, 1032) [in Russian].

  9. R. L. Carlin, Magnetochemistry (Springer, Berlin, 1986).

    Book  Google Scholar 

  10. P. A. Stuzhin, M. Hamdush, and U. Ziener, Inorg. Chim. Acta 236, 131 (1995).

    Article  CAS  Google Scholar 

  11. P. A. Stuzhin, M. Hamdush, and H. Homborg, Mendeleev Commun., No. 5, 196 (1997).

  12. W. R. Scheidt, K. Hatano, G. A. Ruppecht, and P. L. Piciulo, Inorg. Chem. 18, 292 (1979).

    Article  CAS  Google Scholar 

  13. S. Angeloni, E. M. Bauer, C. Ercolani, et al., J. Porphyrins Phthalocyanines 5, 881 (2001).

    Article  CAS  Google Scholar 

  14. J. F. Kirner, W. Dow, and W. R. Scheidt, Inorg. Chem. 15, 1685 (1976).

    Article  CAS  Google Scholar 

  15. C. G. Barraclough, R. L. Martin, S. Mitra, and R. C. Sherwood, J. Chem. Phys. 53, 1638 (1970).

    Article  CAS  Google Scholar 

  16. W. D. Edwards, B. Weiner, and M. C. Zerner, J. Phys. Chem. 92, 6188 (1988).

    Article  CAS  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Krestov Institute of the Solution Chemistry, Russian Academy of Sciences, Ivanovo, Russia

    V. V. Korolev, I. M. Aref’ev, T. N. Lomova, E. N. Ovchenkova, M. E. Klyueva, A. G. Zakharov & D. V. Korolev

  2. Ivanovo State University of Chemical Technology, Ivanovo, Russia

    M. E. Klyueva

Authors
  1. V. V. Korolev
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. I. M. Aref’ev
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. T. N. Lomova
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. E. N. Ovchenkova
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. M. E. Klyueva
    View author publications

    You can also search for this author in PubMed Google Scholar

  6. A. G. Zakharov
    View author publications

    You can also search for this author in PubMed Google Scholar

  7. D. V. Korolev
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to V. V. Korolev.

Additional information

Original Russian Text © V.V. Korolev, I.M. Aref’ev, T.N. Lomova, E.N. Ovchenkova, M.E. Klyueva, A.G. Zakharov, D.V. Korolev, 2012, published in Zhurnal Fizicheskoi Khimii, 2012, Vol. 86, No. 7, pp. 1285–1290.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Korolev, V.V., Aref’ev, I.M., Lomova, T.N. et al. The magnetothermal properties of substituted (tetraazoporphynato)manganese(III) in aqueous suspension. Russ. J. Phys. Chem. 86, 1165–1170 (2012). https://doi.org/10.1134/S0036024412070102

Download citation

  • Received:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1134/S0036024412070102

Keywords

Search

Navigation