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Issue 36, 2016
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Organic derivatives of Mg(BH4)2 as precursors towards MgB2 and novel inorganic mixed-cation borohydrides

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Abstract

A series of organic derivatives of magnesium borohydride, including Mg(BH4)2·1.5DME (DME = 1,2-dimethoxyethane) and Mg(BH4)2·3THF (THF = tetrahydrofuran) solvates and three mixed-cation borohydrides, [Cat]2[Mg(BH4)4], [Cat] = [Me4N], [nBu4N], [Ph4P], have been characterized. The phosphonium derivative has been tested as a precursor for synthesis of inorganic mixed-metal borohydrides of magnesium, Mx[Mg(BH4)2+x], M = Li–Cs, via a metathetic method. The synthetic procedure has yielded two new derivatives of heavier alkali metals M3Mg(BH4)5 (M = Rb, Cs) mixed with amorphous Mg(BH4)2. Thermal decomposition has been studied for both the organic and inorganic magnesium borohydride derivatives. Amorphous MgB2 has been detected among the products of the thermal decomposition of the solvates studied, together with organic and inorganic impurities.

Graphical abstract: Organic derivatives of Mg(BH4)2 as precursors towards MgB2 and novel inorganic mixed-cation borohydrides

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Publication details

The article was received on 04 Jun 2016, accepted on 31 Jul 2016 and first published on 22 Aug 2016


Article type: Paper
DOI: 10.1039/C6DT02239A
Dalton Trans., 2016,45, 14370-14377

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    Organic derivatives of Mg(BH4)2 as precursors towards MgB2 and novel inorganic mixed-cation borohydrides

    W. Wegner, T. Jaroń, M. A. Dobrowolski, Ł. Dobrzycki, M. K. Cyrański and W. Grochala, Dalton Trans., 2016, 45, 14370
    DOI: 10.1039/C6DT02239A

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