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Kinetics and enthalpy change in decomposition of Ni(NCS)2(3-R-pyridine)4 complexes (R=ethyl, Cl, Br, CN, NH2)

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Abstract

Isothermal TG and DSC measurements were used to study the effect of the pyridine substituent (3-R) on the kinetics and enthalpy change in the thermal decomposition of Ni(NCS)2(3-R-py)4 complexes.

The found activation energies (E) of the interface advance decreased with the increase in volume of the substituent, allowing the assumption of a dissociative activation mechanism in the thermal decomposition reaction.

The relations between (E) and ΔH and the occurrence of the kinetic compensation effect InA=f(E) are discussed.

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Authors and Affiliations

  1. Institute of Inorganic chemistry, Centre of Chemical research, Slovak Academy of sciences, 842 36, Bratislava

    I. Horváth, E. Jóna, Ľ Gáliková & M. Jamnický

  2. Department of Inorganic chemistry, Slovak Institute of Technology, 812 37, Bratislava, Czechoslovakia

    E. Jóna & M. Jamnický

Authors
  1. I. Horváth
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  2. E. Jóna
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  3. Ľ Gáliková
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  4. M. Jamnický
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Additional information

Part XX in the series Heterogeneous reactions of solid Ni(II) complexes.

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Horváth, I., Jóna, E., Gáliková, Ľ. et al. Kinetics and enthalpy change in decomposition of Ni(NCS)2(3-R-pyridine)4 complexes (R=ethyl, Cl, Br, CN, NH2). Journal of Thermal Analysis 28, 435–438 (1983). https://doi.org/10.1007/BF01983279

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  • DOI: https://doi.org/10.1007/BF01983279

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