Transition Metal-Based Frustrated Lewis Pairs

  • Author: ChemistryViews
  • Published: 09 November 2011
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
  • Source / Publisher: Journal of the American Chemical Society/ACS Publications
thumbnail image: Transition Metal-Based Frustrated Lewis Pairs

Sterically hindered or frustrated Lewis acid–Lewis base pairs (FLPs) are of interest because of their ability to activate small molecules, including CO2 and H2. Typical examples are inter- or intramolecular combinations of bulky phosphines or amines with strongly electrophilic RB(C6F5)2 components.

Duncan Wass and co-workers, University of Bristol, UK, have developed transition metal-based analogues of FLPs that undergo additional reactivity. The cationic zirconocene–phosphinoaryloxide complexes (pictured) mirror the reactivity of main group systems for the heterolytic cleavage of H2, activation of CO2, alkenes, alkynes and aldehydes, and the ring-opening of THF. The complexes were also shown to go beyond the main group systems reported to date in accessing more powerful reactivity. This includes the stepwise reduction of CO or CO2 under mild conditions, the cleavage of C–O bonds in acyclic ethers, and the cleavage of aliphatic C–Cl or even C–F bonds.

See also:

Article Views: 3225

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)published by Wiley-VCH