Transition metal complexes with pyrazole-based ligands 7. Zn(II), Co(II), Mn(II) and Cu(II) complexes with 3-amino-5-methylpyrazole

K. Meszaros-Szecsenyi, E. Z. Ivegeš, V. M. Leovac, A. Kovács, G. Pokol, Ž K. Jaćimović

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Complexes represented by the general formula [MCl2L2] (M(II)=Zn, Mn, Co) and complexes of [Cu3Cl6L4] and CuSO4L2·4H2O, CoSO4L2·3H2O, [ZnSO4L3] where L stands for 3-amino-5-methylylpyrazole were prepared. The complexes were characterized by elemental analysis, FT-IR spectroscopy, thermal (TG, DTG, DSC and EGA) methods and molar conductivity measurements. Except for the Zn-complexes, the magnetic susceptibilities were also determined. Thermal decomposition of the sulphato complexes of copper(II) and cobalt(II) and the chloro-complexes of cobalt(II) and manganese(II) resulted in well-defined intermediates. On the basis of the IR spectra and elemental analysis data of the intermediates a decomposition scheme is proposed.

Original languageEnglish
Pages (from-to)493-501
Number of pages9
JournalJournal of Thermal Analysis and Calorimetry
Issue number2
Publication statusPublished - Jan 1 1999
EventProceedings of the 1998 7th European Symposium on Thermal Analysis and Calorimetry - Balatonfured, Hungary
Duration: Aug 30 1998Sep 4 1998



  • 3-amino-5-methylpyrazole
  • FT-IR spectroscopy
  • Thermal decomposition
  • Transition metal complexes

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

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