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Mössbauer study on thermal decomposition of ammonium tris (malonato) ferrate (III) tetrahydrate

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Abstract

Thermal decomposition of ammonium tris (malonato) ferrate (III) tetrahydrate, i. e. (NH4)3[Fe(CH2C2O4)3]·4H2O has been studied up to 973 K in static air atmosphere employing Mössbauer and infrared spectroscopies, and non-isothermal techniques (TG, DTG, DTA). The anhydrous complex decomposes into an iron (II) intermediate at 453 K. The iron (II) species on further heating is reoxidized to α-Fe2O3 as the final thermolysis product. An increase in particle size of α-Fe2O3 with increasing decomposition temperature has been observed. The results are compared with the analogous oxalate complex.

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Authors and Affiliations

  1. Department of Chemistry, Guru Nanak Dev University, 143 005, Amritsar, India

    B. S. Randhawa & Sandeep Kaur

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  1. B. S. Randhawa
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  2. Sandeep Kaur
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Randhawa, B.S., Kaur, S. Mössbauer study on thermal decomposition of ammonium tris (malonato) ferrate (III) tetrahydrate. Journal of Radioanalytical and Nuclear Chemistry Letters 214, 447–454 (1996). https://doi.org/10.1007/BF02163559

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  • DOI: https://doi.org/10.1007/BF02163559

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