A new dabco templated metal sulfate, (C6H14N2)[Mn (H2O)6](SO4)2. Chemical preparation, hydrogen-bonded structure and thermal decomposition |
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| Authors: | Walid Rekik Houcine Na?li Tahar Mhiri and Thierry Bataille |
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| Institution: | (1) Sciences Chimiques de Rennes (CNRS, UMR 6226), Groupe Matériaux Inorganiques: Chimie Douce et Réactivité, Université de Rennes I, Avenue du Général Leclerc, 35042 Rennes CEDEX, France;(2) Laboratoire de l’Etat Solide, Département de Chimie, Faculté des Sciences de Sfax, BP 802 3018 Sfax, Tunisie |
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| Abstract: | The crystal structure of manganese sulfate templated by 1,4-diaza-bicyclo2.2.2]octane (abbreviated dabco), (C6H14N2)Mn(H2O)6](SO4)2, was investigated using single crystal X-ray diffraction data. It crystallises in the monoclinic system (space group P21/c) with the following unit-cell parameters: a = 12.1392(2) ?, b = 12.3117(2) ?, c = 12.2765(2) ?, β = 104.607(1)°, V = 1775.47(5) ?3 and Z = 4. The structure has been solved using direct methods and refined by least-squares analysis R
1 = 0.0381, wR
2 = 0.1082]. The crystal structure of the title compound is built from isolated Mn(H2O)6]2+ octahedral cations, 1,4-diaza-bicyclo2.2.2]octandiium cations (C6H14N2)2+ and sulfate anions (SO4)2− connected by a three-dimensional hydrogen-bond network. The thermal decomposition of the precursor, studied by thermogravimetry
and temperature-dependent X-ray powder diffraction, proceeds through four stages giving rise to the mixture of Mn2O3and Mn3O4.
Supplementary Material CCDC 620298 contains the supplementary crystallographic data for this paper. These data can be obtained free of charge from
The Cambridge Crystallographic Data Centre via www.ccdc.cam.ac.uk/data_request/cif. |
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| Keywords: | Chemical synthesis 3D supramolecular structure protonated dabco thermal decomposition hydrogen bonds transition metal sulfate |
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