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Novel zinc(II) benzoate complex compounds with caffeine and urea

Synthesis and characterization

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Abstract

Novel zinc(II) complex compounds of general formula Zn(C6H5COO)2·L2 (where L=caffeine (caf) and urea (u)) were synthesized and characterized by elemental analysis and IR spectroscopy. The thermal behaviour of the complexes was studied during heating in air by thermogravimetry. It was found that the thermal decomposition of the anhydrous Zn(II) benzoate compounds with bioactive ligands was initiated by the release of organic ligands at various temperatures. On further heating of the compounds up to 400°C the thermal degradation of the benzoate anions took place. Zinc oxide was found as the final product of the thermal decomposition of all zinc(II) benzoate complex compounds heated to 600°C. Results of elemental analysis, infrared spectroscopy, mass spectroscopy and thermogravimetry are presented.

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Authors and Affiliations

  1. Department of Inorganic Chemistry, P. J. Šafarik University, Moyzesova 11, 041 54, Košice, Slovak Republic

    Lenka Findoráková, Katarína Győryová & L. Halás

  2. Institute of Macromolecular Chemistry AS CR, Heyrovského 2, 162 06, Prague 6, Czech Republic

    Jana Kovářová

  3. Nuclear Research Institute, Řež, plc., 250 68, Řež, Czech Republic

    V. Balek

  4. Chemistry Department, Faculty of Science, Cairo University Giza, Cairo, 126 13 A. R., Egypt

    F. A. Nour El-Dien

Authors
  1. Lenka Findoráková
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  2. Katarína Győryová
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  3. Jana Kovářová
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  4. V. Balek
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  5. F. A. Nour El-Dien
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  6. L. Halás
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Corresponding author

Correspondence to Katarína Győryová.

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Findoráková, L., Győryová, K., Kovářová, J. et al. Novel zinc(II) benzoate complex compounds with caffeine and urea. J Therm Anal Calorim 95, 923–928 (2009). https://doi.org/10.1007/s10973-008-8581-6

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  • DOI: https://doi.org/10.1007/s10973-008-8581-6

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