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Thermal decomposition of bishydrazinocarboxylate iron(II) di-hydrazinate

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Abstract

Low temperature (T<200°C) thermal decomposition in air of bishydrazinocarboxylate iron(II) dihydrazinate [Fe(II)(N2H3COO)2(N2H4)2] is known to produceγ-Fe2O3 in ultrafine form [1–4]. This decomposition process is known to be exothermal and autocatalytic but details regarding the stepwise mechanism of decomposition is yet unknown although a few attempts have been made with limited success [1, 5]. In our present work, we have combined the results from (i) thermal analysis of complex precursor and (ii) characterization of products isolated at intermediate and final stages of decomposition in order to explain the stepwise mechanism of decomposition of Fe(N2H3COO)2(N2H4)2 in air.

Zusammenfassung

Mittels DTA/TG/DTG, XRD sowie IR wurde die thermische Zersetzung von Bis-hydrazinocarboxylat-eisen(II)-dihydrazinat untersucht. Die thermische Zersetzung verläuft in sechs Schritten und endet bei genügend niedriger temperatur mit der Bildung vonγ-Fe2O3. Durch Auswertung der Untersuchungsdaten konnten die einzelnen Zwischenprodukte, darunter eine neuartige Verbindung FeO2.2CO, identifiziert werden.

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Authors and Affiliations

  1. Physical Chemistry Division, National Chemical Laboratory, 411 008, Pune, India

    K. B. Ghose, V. G. Gunjikar & S. K. Date

Authors
  1. K. B. Ghose
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  2. V. G. Gunjikar
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  3. S. K. Date
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Additional information

NCL Communication No. 4613.

One of us (KBG) wishes to thank the Council of Scientific and Industrial Research for the award of the senior research fellowship. We are grateful to Dr. P. Ratnasamy for his continuing interest in our work.

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Ghose, K.B., Gunjikar, V.G. & Date, S.K. Thermal decomposition of bishydrazinocarboxylate iron(II) di-hydrazinate. Journal of Thermal Analysis 36, 869–880 (1990). https://doi.org/10.1007/BF01904623

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  • DOI: https://doi.org/10.1007/BF01904623

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