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Thermal decomposition of silver chromate complex with 1, 10 phenanthroline, Ag2(phen)2CrO4

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Abstract

The decomposition of silver chromate complex with 1, 10 phenanthroline has been studied by TG/DTG/DTA method and X-ray diffraction analysis. Intermediate decomposition products have been isolated and characterized. The thermolysis of Ag2(phen)2CrO4 occurs in the two major stages: Ag2(phen)x“CrO4” as a product of the first stage and various mixtures of silver, silver chromate and silver metachromite as the final residue. The comparison of the decomposition process of the complex with that of parent Ag2CrO4 indicates that the presence of ligand changes thermal behaviour of the latter.

Zusammenfassung

Mittels TG/DTG/DTA und Röntgendiffraktionsanalyse wurde die Zersetzung des Silberchromat/1,10-Phenanthrolinkomplexes untersucht. Zwischenprodukte dieser Zersetzung wurden isoliert und beschrieben. Die Thermolyse von Ag2(phen)2CrO4 verläuft in zwei Hauptschritten: im ersten Schritt entsteht Ag2(phen)x“CrO4”, als Endprodukt entstehen verschiedene Gemische aus Silber, Silberchromat und Silbermetachromit. Ein Vergleich des Zersetzungsprozesses des Komplexes mit dem der Stammverbindung Ag2CrO4 ergab, daß die Gegenwart von Liganden das thermische Verhalten von Ag2CrO4 verändert.

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The authors thank Dr W. Mielcarek for making X-ray analysis.

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Ciešlak-Golonka, M., Wieckowska, J. & Kacma, B. Thermal decomposition of silver chromate complex with 1, 10 phenanthroline, Ag2(phen)2CrO4 . Journal of Thermal Analysis 36, 2217–2221 (1990). https://doi.org/10.1007/BF01914156

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  • DOI: https://doi.org/10.1007/BF01914156

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