Jump to main content
Jump to site search

Volume 151, 2011
Previous Article Next Article

Novel sodium aluminium borohydride containing the complex anion [Al(BH4,Cl)4]

Author affiliations


The synthesis of a novel alkali-metal aluminium borohydride NaAl(BH4)xCl4−x from NaBH4 and AlCl3 using a solid state metathesis reaction is described. Structure determination was carried out using synchrotron powder diffraction data and vibrational spectroscopy. An orthorhombic structure (space groupPmn21) is formed which contains Na+ cations and complex [Al(BH4,Cl)4] anions. Due to the high chlorine content (1 ≤ x ≤ 1.43) the hydrogen density of the borohydride is only between 2.3 and 3.5 wt.% H2 in contrast to the expected 14.6 wt.% for chlorine free NaAl(BH4)4. The decomposition of NaAl(BH4)xCl4−x is observed in the target range for desorption at about 90 °C by differential scanning calorimetry (DSC), in situRaman spectroscopy and synchrotron powder X-ray diffraction. Thermogravimetric analysis (TG) shows extensive mass loss indicating the loss of H2 and B2H6 at about 90 °C followed by extensive weight loss in the form of chloride evaporation.

Back to tab navigation

Publication details

The article was received on 16 Dec 2010, accepted on 07 Feb 2011 and first published on 18 May 2011

Article type: Paper
DOI: 10.1039/C0FD00024H
Faraday Discuss., 2011,151, 231-242

  •   Request permissions

    Novel sodium aluminium borohydride containing the complex anion [Al(BH4,Cl)4]

    I. Lindemann, R. D. Ferrer, L. Dunsch, R. Černý, H. Hagemann, V. D'Anna, Y. Filinchuk, L. Schultz and O. Gutfleisch, Faraday Discuss., 2011, 151, 231
    DOI: 10.1039/C0FD00024H

Search articles by author