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Anion stabilised hypercloso-hexaalane Al6H6
Simon J Bonyhady1, David Collis1, Nicole Holzmann2
1School of Chemistry, Monash University, PO Box 23, Clayton, VIC, 3800, Australia.
Nature Communications
|August 8, 2018
Summary
Stable aluminum hydride clusters, analogous to boron hydrides, were synthesized for the first time. These novel hypercloso-hexaalane clusters exhibit delocalized bonding, expanding the chemistry of polyhedral boranes.
Area of Science:
- Inorganic Chemistry
- Materials Science
Background:
- Boron hydride clusters are highly diverse and important in chemistry.
- Stable aluminum hydride analogues have been challenging to synthesize.
Purpose of the Study:
- To synthesize and characterize stable aluminum hydride clusters.
- To explore the structural and bonding properties of these new compounds.
Main Methods:
- Reduction of an amidinato-aluminium(III) hydride complex with magnesium(I) dimers.
- Crystallographic and computational studies.
Main Results:
- Discovery of unprecedented stable aluminum(I) hydride complexes with hypercloso-hexaalane (Al6H6) cores.
- Demonstration of electronically delocalized skeletal bonding, comparable to boranes.
Conclusions:
- The synthesis represents the first stable aluminum hydride clusters analogous to classical polyhedral boranes.
- This work extends the known chemistry of polyhedral boranes to aluminum hydride systems.
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