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Studies on transition metal murexide complexes

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Abstract

Iron, cobalt, nickel, copper, zinc, cadmium and mercury murexide complexes have been prepared and characterized. The thermal properties of these complexes are studied deeply by DTA technique where their thermal peaks are explained. The multi-stages thermal decomposition mechanism is proposed. The thermodynamic parameters of the decomposition steps are calculated. The entropy change values for all complexes are of the same magnitude and all transition states of the thermal reactions are more ordered than the reactants. The thermal reactions proceed in complicated mechanisms. The fractions appeared in the calculated orders of the thermal reactions confirmed that these reactions proceeded via complex mechanisms.

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Authors and Affiliations

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

    Masoud M. S. & Kassem T. S.

  2. Physics and Chemistry Department, Faculty of Education, Damanhour, Alexandria University, Alexandria, Egypt

    Shaker M. A. & Ali A. E.

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  1. Masoud M. S.
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  2. Kassem T. S.
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  3. Shaker M. A.
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  4. Ali A. E.
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Correspondence to Ali A. E..

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Masoud, M.S., Kassem, T.S., Shaker, M.A. et al. Studies on transition metal murexide complexes. J Therm Anal Calorim 84, 549–555 (2006). https://doi.org/10.1007/s10973-005-9991-3

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  • DOI: https://doi.org/10.1007/s10973-005-9991-3

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