Journal of Thermal Analysis and Calorimetry

, Volume 130, Issue 2, pp 701–711 | Cite as

Synthesis and thermal stability of cis-dichloro[(E)-ethyl-2-(2-((8-hydroxyquinolin-2-il)methylene)hidrazinyl)acetate-κ2N]-palladium(II) complex

  • Nebojša N. Begović
  • Milica M. Vasić
  • Vladimir A. Blagojević
  • Nenad R. Filipović
  • Aleksandar D. Marinković
  • Aleksandar Malešević
  • Dragica M. Minić
Article
  • 117 Downloads

Abstract

The structure of new cis-dichloro[(E)-ethyl-2-(2-((8-hydroxyquinolin-2-il)methylene)hidrazinyl)acetate-κ2N]-palladium(II) complex was determined using a combination of XRD and IR measurements and DFT calculations. Inherent flexibility of its structure is evident from the complexity of its IR spectrum, which could only be theoretically reproduced as a combination of several closely related structures, involving rotation around C–O bond and changes in hydrogen interactions of its –OH group. Its thermal stability and decomposition were studied non-isothermally, and the thermal decomposition mechanism was proposed using correlation with DFT calculations at the molecular level. It was determined that the initial degradation step consists of the release of Cl free radical, which then reacts with both the initial compound and the degradation products. Besides the endothermic steps, there are exothermic ones, contributing to the complex shape of the DSC curve, consisted of overlapping endothermic and exothermic peaks. Deconvolution of DTG curve allowed identification of primary fragments of the initial degradation process and, in conjunction with DFT calculations, construction of the most likely reaction mechanism.

Keywords

Thermal decomposition Reaction mechanism DFT calculation Reaction kinetics Organometallic complex Thermodynamics 

Supplementary material

10973_2017_6458_MOESM1_ESM.pdf (466 kb)
Supplementary material 1 (PDF 466 kb)

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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2017

Authors and Affiliations

  • Nebojša N. Begović
    • 1
  • Milica M. Vasić
    • 2
  • Vladimir A. Blagojević
    • 3
  • Nenad R. Filipović
    • 4
  • Aleksandar D. Marinković
    • 5
  • Aleksandar Malešević
    • 6
  • Dragica M. Minić
    • 2
  1. 1.Institute of General and Physical ChemistryBelgradeRepublic of Serbia
  2. 2.Faculty of Physical ChemistryUniversity of BelgradeBelgradeRepublic of Serbia
  3. 3.Institute of Technical Sciences of the Serbian Academy of Science and ArtsBelgradeRepublic of Serbia
  4. 4.Faculty of AgricultureUniversity of BelgradeBelgradeRepublic of Serbia
  5. 5.Faculty of Technology and MetallurgyUniversity of BelgradeBelgradeRepublic of Serbia
  6. 6.Faculty of ChemistryUniversity of BelgradeBelgradeRepublic of Serbia

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