Remarkably Stable InH3 Complex Found

  • Author:
  • Published: 31 January 2019
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA
  • Source / Publisher: Dalton Transactions/Royal Society of Chemistry
  • Associated Societies: Royal Society of Chemistry (RSC), UK
thumbnail image: Remarkably Stable InH<sub>3</sub> Complex Found

Complexes of group 3 hydrides such as alane (AlH3) and gallane (GaH3) are useful, e.g., as reducing agents in organic chemistry. In contrast, only few examples of indane (InH3) complexes are known due to their inherent instability. Bulky ligands can be used to stabilize InH3 and protect it from decomposition reactions. However, if the ligands have alkyl groups close to the In atom, this can speed up decomposition due to C–H activation in the alkyl groups.

Alasdair I. McKay and colleagues, University of New South Wales, Sydney, Australia, have synthesized an exceptionally stable N-heterocyclic carbene (NHC) indane complex, [InH3(IPr*)] (pictured, iPr* = 1,3-bis(2,6-bis(diphenylmethyl)-4-methylphenyl)imidazol-2-ylidene). The team prepared the complex using a direct reaction of IPr* with LiInH4.

The complex is stable in crystalline form at room temperature in air for an indefinite period and decomposes at 182 °C under argon. It does not decompose in solution at 0 °C. The team attributes this stability to a lack of alkyl groups in close proximity to In, as well as to the steric bulk of the NHC ligand, which stabilizes the complex kinetically.


Article Views: 961

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

Bookmark and Share

If you would like to reuse any content, in print or online, from, please contact us first for permission. more

CONNECT: on Facebook on Twitter on YouTube on LinkedIn Sign up for our free newsletter

A product of ChemPubSoc Europe (16 European Chemical Societies)and Wiley-VCH