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Issue 45, 2015
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Salts of highly fluorinated weakly coordinating anions as versatile precursors towards hydrogen storage materials

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Abstract

We report the most recent results related to application of a metathetic pathway towards mixed-metal borohydrides. The synthetic protocol utilizes highly-fluorinated weakly coordinating anion salts as precursors. We discuss the technicalities related to the use of fluorine-rich anions as well as the improvements which are still needed to deliver high-purity materials with potential applications for hydrogen storage. The applicability of the method is expanded beyond the previously described complex borohydrides of alkali metal Zn or Y, towards the systems containing MgII, ScIII, MnII, or EuIII. We have prepared for the first time [Ph4P]2[Mn(BH4)4] and [Me4N]2[Mg(BH4)4], solved their crystal structures from powder x-ray diffraction, and used selected organic metal borohydride derivatives as precursors towards mixed-metal borohydrides (K2Mn(BH4)4, Rb3Mg(BH4)5, etc.). We have also prepared [Ph4P][Eu(BH4)4], which is the first derivative of EuIII in the homoleptic environment of borohydride anions.

Graphical abstract: Salts of highly fluorinated weakly coordinating anions as versatile precursors towards hydrogen storage materials

  • This article is part of the themed collection: Fluorine
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Publication details

The article was received on 28 May 2015, accepted on 22 Jul 2015 and first published on 05 Aug 2015


Article type: Paper
DOI: 10.1039/C5DT02005K
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Dalton Trans., 2015,44, 19469-19477

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    Salts of highly fluorinated weakly coordinating anions as versatile precursors towards hydrogen storage materials

    A. Starobrat, M. J. Tyszkiewicz, W. Wegner, D. Pancerz, P. A. Orłowski, P. J. Leszczyński, K. J. Fijalkowski, T. Jaroń and W. Grochala, Dalton Trans., 2015, 44, 19469
    DOI: 10.1039/C5DT02005K

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