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Thermal decomposition paths in A2CuCl4 complexes: anilinium and its derivatives

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Abstract

The thermal decomposition paths of anilinium, 4-chloro anilinium tetrachlorocopper(II) complexes are compared to their benzilinium derivative. All these complexes crystallize in the layered structure, typical for a A2MX4 family, are studied in literature for their magnetic, semiconducting properties. TG analyses of (anilinium)2CuCl4 (A) and (4-chloro anilinium)2CuCl4 (B) loses one molecule of organic ammonium hydrochloride along with one molecule of amine, to form (H)CuCl3, which subsequently completely decomposes to Cu above 500 °C. On the other hand, (benzilinium)2CuCl4 (C) loses two molecules of hydrochloride along with chlorine molecule first then two molecules of benzyl amine with formation of Cu above 300 °C. DSC studies on C have shown reversible endothermic phase transition at 130.95 °C (−1.98 J g−1) while heating and exothermic phase transition at 117.07 °C (0.93 J g−1) while cooling. Thus, the observed changes in the decomposition pathway can be correlated to the order–disorder phase transition occurred in the compound C.

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Acknowledgements

PSG thanks to Gujarat Narmada Fertilizer Corporation, Bharuch, India and UGC-DAE CSR, Anupuram, (CRS K-04/19/2009) INDIA, for their financial support. AV thanks GNFC, for Junior Research Fellowship.

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  1. Department of Chemistry, Faculty of Science, The Maharaja Sayajirao University of Baroda, Vadodara, Gujarat, 390002, India

    Ashok K. Vishwakarma & Prasanna S. Ghalsasi

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  1. Ashok K. Vishwakarma
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  2. Prasanna S. Ghalsasi
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Correspondence to Prasanna S. Ghalsasi.

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Vishwakarma, A.K., Ghalsasi, P.S. Thermal decomposition paths in A2CuCl4 complexes: anilinium and its derivatives. J Therm Anal Calorim 107, 155–158 (2012). https://doi.org/10.1007/s10973-011-1633-3

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