Easy Access to Cyclometalated Gold Complexes

  • ChemPubSoc Europe Logo
  • Author: Pamela Alsabeh
  • Published Date: 29 July 2016
  • Source / Publisher: Chemistry – A European Journal/Wiley-VCH
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
thumbnail image: Easy Access to Cyclometalated Gold Complexes

Related Societies

To gain an understanding of catalytic processes, stoichiometric reactivity studies are often performed. Oxidative addition (OA) is an important initial step in many organometallic catalysis reactions and is often used to synthesize key metal intermediates involved in the catalysis. Thus, it proves useful to first study OA by forming target metal complexes, because this can provide evidence for the mechanism of the corresponding catalytic reaction.


Frank Glorius and colleagues, Westfälische Wilhelms-Universität Münster, Germany, have performed a successful OA of aryldiazonium salts to gold(I) complexes under visible-light photoredox conditions. The researchers use a fast and operationally simple method to access a wide range of cationic (C,N)-cyclometalated gold(III) species (pictured). The photoredox reaction conditions use a ruthenium-based photocatalyst and green light-emitting diodes (LEDs) as the visible-light source.


Using this novel photoredox strategy, the researchers successfully prepared gold(III) species bearing a variety of phosphine and N-heterocyclic carbene (NHC) ligands. Subsequent abstraction of the chloride gave dicationic gold species that display Lewis acidic behavior. The synthesis of these complexes through OA provides direct experimental evidence for the involvement of such steps in dual gold/photoredox catalysis. The mild room temperature conditions and broad ligand scope also suggest that this method could be used to study the properties and reactivity of gold(III) species.


 

Article Views: 1276

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 ChemistryViews.org, please contact us first for permission. more


CONNECT:

ChemistryViews.org on Facebook

ChemistryViews.org on Twitter ChemistryViews.org on YouTube ChemistryViews.org on LinkedIn Sign up for our free newsletter


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