1. Efficient Synthesis of an Aluminum Amidoborane Ammoniate.
- Author
-
Junzhi Yang, Beaumont, Paul R., Humphries, Terry D., Jensen, Craig M., and Xingguo Li
- Subjects
ALUMINUM compound synthesis ,MECHANICAL chemistry ,BALL mills ,BORANES ,DEHYDROGENATION - Abstract
A novel species of metal amidoborane ammoniate, [Al(NH
2 BH3 )6 3- ][Al(NH3)63+] has been successfully synthesized in up to 95% via the one-step reaction of AlH3 ·OEt2 with liquid NH3 BH3 ·nNH3 (n = 1~6) at 0 °C. This solution based reaction method provides an alternative pathway to the traditional mechano-chemical ball milling methods, avoiding possible decomposition. MAS27 Al NMR spectroscopy confirms the formulation of the compound as an Al(NH2 BH3 )6 3- complex anion and an Al(NH3)63+ cation. Initial dehydrogenation studies of this aluminum based M-N-B-H compound demonstrate that hydrogen is released at temperatures as low as 65 °C, totaling ~8.6 equivalents of H2 (10.3 wt %) upon heating to 105 °C. This method of synthesis offers a promising route towards the large scale production of metal amidoborane ammoniate moieties. [ABSTRACT FROM AUTHOR]- Published
- 2015
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