A convenient and safe method for the synthesis of ammonia triborane is reported along with studies of its hydrolytic reactions that demonstrate ammonia triborane is both soluble and stable in water but that upon the addition of acid or an appropriate transition metal catalyst it rapidly releases hydrogen. These studies indicate that ammonia triborane is a promising material for chemical hydrogen storage applications.
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Ammonia triborane: a new synthesis, structural determinations, and hydrolytic hydrogen-release properties.
J Am Chem Soc
January 2009
Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, USA.
Iodine oxidation of B(3)H(8)(-) in glyme solution to produce (glyme)B(3)H(7), followed by displacement of the coordinated glyme by reaction with anhydrous ammonia provides a safe and convenient preparation of ammonia triborane, NH(3)B(3)H(7) (1). X-ray crystallographic determinations and DFT computational studies of both NH(3)B(3)H(7) and the NH(3)B(3)H(7) x 18-crown-6 adduct demonstrate that while computations predict a symmetric single bridging-hydrogen conformation, NH(3)B(3)H(7) has a highly asymmetric structure in the solid-state that results from intermolecular N-H(+)..
View Article and Find Full Text PDFLocalized orbital theory and ammonia triborane.
Phys Chem Chem Phys
November 2007
Biophysics Program, University of California, Berkeley, CA 96720, USA.
In a previous paper [J. Subotnik, Y. Shao and W.
View Article and Find Full Text PDFAmmonia triborane: a promising new candidate for amineborane-based chemical hydrogen storage.
J Am Chem Soc
November 2006
Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104-6323, USA.
A convenient and safe method for the synthesis of ammonia triborane is reported along with studies of its hydrolytic reactions that demonstrate ammonia triborane is both soluble and stable in water but that upon the addition of acid or an appropriate transition metal catalyst it rapidly releases hydrogen. These studies indicate that ammonia triborane is a promising material for chemical hydrogen storage applications.
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