Transition Metal Complexes with Pyrazole-Based Ligands 7. Zn(II), Co(II), Mn(II) and Cu(II) complexes with 3-amino-5-methylpyrazole |
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| Authors: | K. Mészáros-Szécsényi E. Z. Ivegeš V. M. Leovac A. Kovács G. Pokol Ž. K. Jaćimović |
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| Affiliation: | (1) Institute of Chemistry, University of Novi Sad, Faculty of Sciences, 21000 Novi Sad Trg D. Obradovicá 3, Yugoslavia;(2) Research Group for Technical Analytical Chemistry of the Hungarian Academy of Sciences at the Institute for General and Analytical Chemistry, Technical University of Budapest, H-1521 Budapest;(3) Institute for General and Analytical Chemistry, Technical University of Budapest, H-1521 Budapest, Hungary;(4) Faculty of Metallurgy and Technology, Podgorica, Yugoslavia |
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| Abstract: | 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-methylpyrazole 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. This revised version was published online in August 2006 with corrections to the Cover Date. |
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| Keywords: | 3-amino-5-methylpyrazole FT-IR spectroscopy thermal decomposition transition metal complexes |
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