Journal of Thermal Analysis and Calorimetry

, Volume 104, Issue 3, pp 817–821

Thermal properties of solid complexes with biologically important heterocyclic ligands

Part III. Thermal decomposition and infrared spectra of thiocyanato Mg(II) complexes with 2-hydroxypyridine, quinoline, and quinoxaline

Authors

  • E. Jóna
    • Department of Chemical Technologies and EnvironmentFaculty of Industrial Technologies, Trencin University of A. Dubcek
  • L’. Lajdová
    • Department of Chemical Technologies and EnvironmentFaculty of Industrial Technologies, Trencin University of A. Dubcek
  • L’. Kvasnicová
    • Department of Chemical Technologies and EnvironmentFaculty of Industrial Technologies, Trencin University of A. Dubcek
  • S. Lendvayová
    • Department of Chemical Technologies and EnvironmentFaculty of Industrial Technologies, Trencin University of A. Dubcek
  • M. Pajtášová
    • Department of Chemical Technologies and EnvironmentFaculty of Industrial Technologies, Trencin University of A. Dubcek
  • D. Ondrušová
    • Department of Chemical Technologies and EnvironmentFaculty of Industrial Technologies, Trencin University of A. Dubcek
  • P. Lizák
    • Department of Industrial DesignFaculty of Industrial Technologies, Trencin University of A. Dubcek
    • Department of Chemical Technologies and EnvironmentFaculty of Industrial Technologies, Trencin University of A. Dubcek
    • University of New Brunswick
    • Deptartment of Chemical and Biochemical EngineeringThe University of Western Ontario
Article

DOI: 10.1007/s10973-011-1310-6

Cite this article as:
Jóna, E., Lajdová, L., Kvasnicová, L. et al. J Therm Anal Calorim (2011) 104: 817. doi:10.1007/s10973-011-1310-6

Abstract

The thermal decomposition of the complexes Mg(SCN)2(2-OHpy)4·H2O(I), Mg(SCN)2(quin)4·2H2O(II) and Mg(SCN)(quinox)4·5H2O(III) (2-OHpy–2-hydroxypyridine, quin–quinoline, quinox–quinoxaline) has been investigated in static air atmosphere at 20–1000 °C by means of thermogravimetry (TG), differential thermal analysis (DTA), and infrared (IR) spectroscopy. The composition of the complexes had been identified by means of elemental analysis and complexometric titration. The possible scheme of destruction of the complexes is suggested. The final product of the thermal decomposition was MgS. IR data suggest that heterocyclic ligands were coordinated to Mg(II) through the nitrogen atom of their heterocyclic ring. Thiocyanate group is also coordinated through the nitrogen atom.

Keywords

Thermal decomposition Mg(II) complexes 2-hydroxypyridine Quinoline Quinoxaline TG DTA IR

Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2011