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Crystal Structure, Phase Transition and Thermal Behaviour of Dabcodiium hexaaquacopper(II) bis(selenate/sulfate), (C6H14N2)[Cu(H2O)6](S0.66Se0.34O4)2

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Abstract

A new organically templated metal sulfate/selenate has been synthesized by the slow evaporation method and crystallographically characterized. At room temperature, the dabcodiium hexaaquacopper(II) bis(selenate/sulfate), (C6H14N2)[Cu(H2O)6](S0.66Se0.34O4)2, crystallizes in the monoclinic symmetry (space group P21/n) with the following unit cell parameters: a = 7.0150(2), b = 12.5810(2), c = 9.9470(2) Å; β = 90.820(1)° and Z = 2. Its crystal structure is built from isolated [Cu(H2O)6]2+, (S/SeO4)2− and disordered (C6H14N2)2+ ions linked together by a three-dimensional hydrogen-bonded network. The title compound undergoes an irreversible phase transition at 223 K on cooling run. The thermodiffractometry and the thermogravimetric analyses indicate that its decomposition proceeds through four stages giving rise to the copper oxide.

Graphical Abstract

The crystal structure of (C6H14N2)[Cu(H2O)6](S0.66Se0.34O4)2 is built from isolated [Cu(H2O)6]2+, (S/SeO4)2− and disordered (C6H14N2)2+ ions linked together by a three-dimensional hydrogen-bonded network

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Authors and Affiliations

  1. Laboratoire de l’état solide, Département de chimie, Faculté des Sciences de Sfax, Université de Sfax, BP 1171, 3000, Sfax, Tunisia

    Nouha Loulou Nkhili, Walid Rekik, Houcine Naïli & Tahar Mhiri

  2. Sciences Chimiques de Rennes (CNRS, UMR 6226), Université de Rennes 1, Avenue du Général Leclerc, 35042, Rennes Cedex, France

    Thierry Bataille

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  1. Nouha Loulou Nkhili
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  2. Walid Rekik
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  3. Houcine Naïli
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  4. Tahar Mhiri
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  5. Thierry Bataille
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Correspondence to Walid Rekik.

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Nkhili, N.L., Rekik, W., Naïli, H. et al. Crystal Structure, Phase Transition and Thermal Behaviour of Dabcodiium hexaaquacopper(II) bis(selenate/sulfate), (C6H14N2)[Cu(H2O)6](S0.66Se0.34O4)2 . J Chem Crystallogr 41, 1680–1687 (2011). https://doi.org/10.1007/s10870-011-0157-9

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