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Thermal and temperature dependence of electrical conductivity studies on Zn, Cd and Hg hydrazone complexes

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Abstract

The complexes of Zn, Cd and Hg of isatin isonicotinoyl hydrazone were prepared at two differentpHs. Their thermal studies (TG, DTG and DTA) have been made and the DC electrical conductivity of compressed powder samples as a function of temperature was investigated. The activation energies (ΔE) were calculated for the ligand and the complexes which showed that the ligand has a lower value of ΔE than the complexes. The magnitude of ΔE was found to be affected by the nature of the metal and thepH of preparation.

Zusammenfassung

Bei zwei verschiedenenpH-Werten wurden die Zn-, Cd- und Hg-Komplexe von Isatinisonicotinoylhydrazon hergestellt. Diese wurden thermisch untersucht (TG, DTG, DTA) und die Gleichstromleitfähigkeit von gepreßten Pulverproben als eine Funktion der Temperatur untersucht. Sowohl für die Liganden als auch für die Komplexe wurden die Aktivierungsenergien (ΔE) berechnet, wobei sich für die Liganden niedrigere Werte ergaben. Man fand, daß die Größe von ΔE durch die Art des Metalles und denpH-Wert bei der Herstellung beeinflußt wird.

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Authors and Affiliations

  1. Chemistry Department, Faculty of Science, Menoufia University, Egypt

    R. M. El Bahnasawy, E. El Shereafy & T. I. Kashar

Authors
  1. R. M. El Bahnasawy
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  2. E. El Shereafy
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  3. T. I. Kashar
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El Bahnasawy, R.M., El Shereafy, E. & Kashar, T.I. Thermal and temperature dependence of electrical conductivity studies on Zn, Cd and Hg hydrazone complexes. Journal of Thermal Analysis 39, 65–74 (1993). https://doi.org/10.1007/BF02235447

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  • DOI: https://doi.org/10.1007/BF02235447

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