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Synthesis, Crystal Structures, and Hydrogen-Storage Properties of Eu(AlH4)(2) and Sr(AlH4)(2) and of Their Decomposition Intermediates, EuAlH5 and SrAlH5

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Pommerin,  André
Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Wosylus,  Aron
Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Felderhoff,  Michael
Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Schüth,  Ferdi
Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Weidenthaler,  Claudia
Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Citation

Pommerin, A., Wosylus, A., Felderhoff, M., Schüth, F., & Weidenthaler, C. (2012). Synthesis, Crystal Structures, and Hydrogen-Storage Properties of Eu(AlH4)(2) and Sr(AlH4)(2) and of Their Decomposition Intermediates, EuAlH5 and SrAlH5. Inorganic Chemistry, 51(7), 4143-4150. doi:10.1021/ic202492v.


Cite as: https://hdl.handle.net/11858/00-001M-0000-000E-F244-1
Abstract
Complex Eu(AlH4)(2) and SrAlH4(2) hydrides have been prepared by a mechanochemical metathesis reaction from NaAlH4 and europium or strontium chlorides. The crystal structures were solved from powder X-ray diffraction data in combination with solid-state 27Al NMR spectroscopy. The thermolysis pathway was analyzed in detail, allowing identification of new intermediate EuAlH5/SrAlH5 compounds. Rehydrogenation experiments indicate that the second decomposition step is reversible.