Multiply-Bonded Al(I) Compounds

  • Author: Angewandte Chemie International Edition
  • Published Date: 11 October 2021
  • Copyright: Wiley-VCH GmbH
thumbnail image: Multiply-Bonded Al(I) Compounds

Dialumenes are multiply-bonded Al(I) compounds. Their high reactivity has attracted the attention of chemists because it enables, e.g., the bond activation of usually unreactive small molecules. However, the same high reactivity makes dialumenes challenging to isolate and study, which means relatively little is known about them.


Michael J. Cowley, University of Edinburgh, UK, Tobias Krämer, Maynooth University, Ireland, and colleagues have prepared a dialumene with a weak Al=Al bond that dissociates in solution. By reducing an Al(II) precursor with an Na/K alloy, an amido-phosphine-supported dialumene was prepared (pictured below). As a solid, the compound is Al=Al bonded, but in solution, the Al=Al bond can dissociate to generate Al(I) monomers.

 


Density functional theory (DFT) calculations showed that the Al=Al bond in the dialumene has only marginal multiple-bond character. The dialumene has a long Al=Al bond and a trans-bent structure. The researchers believe that understanding the effects of substituents at Al=Al bonds on the structure, bonding, and reactivity could enable the design of new dialumenes with controllable reactivity patterns.


 

 

 

 

Article Views: 1323

Sign in Area

Please sign in below

Additional Sign In options

Please note that to comment on an article you must be registered and logged in.
Registration is for free, you may already be registered to receive, e.g., the newsletter. When you register on this website, please ensure you view our terms and conditions. All comments are subject to moderation.

Article Comments - To add a comment please sign in

If you would like to reuse any content, in print or online, from ChemistryViews.org, please contact us first for permission and consult our permission guidance prior to making your request

Follow on Facebook Follow on Twitter Follow on YouTube Follow on LinkedIn Follow on Instagram RSS Sign up for newsletters

Magazine of Chemistry Europe (16 European Chemical Societies) published by Wiley-VCH