Journal of Thermal Analysis and Calorimetry

, Volume 56, Issue 2, pp 541–546 | Cite as

Thermoanalytical Investigation of Magnesium(II) Complexes with Pyridine as Bio-Active Ligand

  • S. C. Mojumdarl
  • M. Melník
  • E. Jóna


TG, DTA and other analytical methods were applied to investigate the thermal behaviour and structures of the compounds Mg(ClAc)2(Py)2·2H2O (I), Mg(Cl2Ac)2(Py)·H2O (II), Mg(Cl3Ac)2(Py)·6H2O (III) and Mg(SCN)2(Py)3·2H2O (IV), where ClAc=ClCH2COO, Cl2Ac=Cl2CHCOO, Cl3Ac=Cl3CCOO and Py=Pyridine. The compositions of the complexes and the solid-state intermediates and products of thermolysis were identified by means of elemental analysis. Possible schemes of destruction of the complexes are suggested. The final products of the thermal decompositions were MgO (I–III) and MgS (IV). The IR data suggest unidentate coordination of the carboxylate ions to Mg(II) in complexes I–III. Py is coordinated to the Mg(II) through the nitrogen atom of its heterocyclic ring.

acetate DTA and IR halogenoacetates Mg(II) pyridine SCN TG 


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  1. 1.
    E. Jóna, M. Kubranová, P. Šimon and J. Mroziński, J. Thermal Anal., 46 (1996) 1325.CrossRefGoogle Scholar
  2. 2.
    E. Jóna, A. Sirota, P. Šimon and M. Kubranová, Thermochim. Acta, 258 (1995) 161.CrossRefGoogle Scholar
  3. 3.
    M. Melník, L. Macášková and J. Mroziński, Polyhedron, 7 (1988) 1745.CrossRefGoogle Scholar
  4. 4.
    F. Ióna, M. Hyastijová and J. Kohut, J. Thermal Anal., 41 (1994) 161.Google Scholar
  5. 5.
    J. S. Skoršepa, K. Györyová and M. Melnik, J. Thermal Anal., 44 (1995) 169.Google Scholar
  6. 6.
    H. Langfelderová, L. Macášková, M. Melnik and J. Gažo, Z. Anorg. Chem. 445 (1978) 233.CrossRefGoogle Scholar
  7. 7.
    M. Melník, I. Potočnak, L. Macášková and D. Mikloš, Polyhedron, 15 (1996) 2159.CrossRefGoogle Scholar
  8. 8.
    E. Jóna, and M. Jamnicky, J. Thermal Anal., 27 (1983) 359.CrossRefGoogle Scholar
  9. 9.
    G. D'ascenzo, U. B. Ceipidor, E. Cardarelli and A. D. Magri, Thermochim. Acta, 13 (1975) 449.CrossRefGoogle Scholar
  10. 10.
    M. Melník, M. Koman and T. Glowiak, Polyhedron, 17 (1998) 1767.CrossRefGoogle Scholar
  11. 11.
    S. C. Mojumdar, M. Melnik and E. Jóna, J. Anal. Appl. Pyrol., 46 (1998) 147.CrossRefGoogle Scholar
  12. 12.
    S. C. Mojumdar, M. Valko and M. Melník, Chem. papers, 52 (1998) 650.Google Scholar
  13. 13.
    S. C. Mojumdar, M. Melník and E. Jóna, Polish J. Chem., 73 (1999) 293.Google Scholar
  14. 14.
    S. C. Mojumdar, M. Melník, E. Jóna and D. Hudecová. Chem. papers, in press.Google Scholar
  15. 15.
    S. C. Mojumdar, M. Melník and M. Valko, Polish J. Chem., 73 (1999) 457.Google Scholar
  16. 16.
    J. R. Allan and J. Gavin, J. Thermal Anal., 18 (1980) 263.CrossRefGoogle Scholar
  17. 17.
    J. Mroziński and E. Heyduk, Thermochim. Acta, 93 (1985) 85.CrossRefGoogle Scholar
  18. 18.
    K. Györyová and F. A. Nour El-Dien, TERMANAL '97, Proc. Int. Conf. Belušské Slatiny, Slovakia, October 1–3, 1997, CHTF-STU Press, Bratislava 1997.Google Scholar
  19. 19.
    G. Deveto, G. Ponticelli and C. Preti, J. Inorg. Nucl. Chem., 37 (1975) 1635.CrossRefGoogle Scholar
  20. 20.
    K. Nakamoto, Infrared and Raman Spectra of Inorganic and Coordination Compounds (4th edition), J. Wiley, 1986, p. 232.Google Scholar
  21. 21.
    D. Stoilova, G. Nikolov and K. Balarev, Izv. Akad. Nauk SSSR, Ser. Khim., 9 (1976) 371.Google Scholar
  22. 22.
    I. Ondrejkovicová, D. Drobuliaková and M. Melník, Current Trends in Coordination Chemistry, 2 (1995) 447.Google Scholar

Copyright information

© Kluwer Academic Publishers 1999

Authors and Affiliations

  • S. C. Mojumdarl
    • 1
  • M. Melník
    • 2
  • E. Jóna
    • 3
  1. 1.Institute of Inorganic ChemistrySlovak Academy of SciencesBratislava
  2. 2.Department of Inorganic Chemistry, Faculty of Chemical TechnologySlovak University of TechnologyBratislava
  3. 3.Department of ChemistryFaculty of Industrial TechnologiesPúchovSlovakia

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