Catalyst Under Stress

  • ChemPubSoc Europe Logo
  • Author: Anne Deveson
  • Published Date: 27 February 2014
  • Source / Publisher: Chemistry – A European Journal/Wiley-VCH
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
thumbnail image: Catalyst Under Stress

Related Societies

The oxidation of water to molecular oxygen is an important reaction in the frame of artificial photosynthesis, solar fuels, and a sustainable energy future. Iridium complexes have recently gained attention as effective precatalysts for this transformation.

To gain deeper understanding of this process, Alceo Macchioni, University of Perugia, Italy, and colleagues aimed at intercepting the intermediates of the oxidative transformation of [Cp*Ir(bzpy)NO3] (Cp* = pentamethylcyclopentadienyl, bzpy = 2-benzoylpyridine), which is a competent catalyst for water oxidation.
They succeeded in intercepting and characterizing three intermediates that are formed when oxidants of different nature (H2O2, CAN, and NaIO4) are used. Consequently, the oxidative transformation appears to be rather general.




The researchers observed the progressive oxidation of Cp*, whereas the benzoylpyridine ancillary ligand remained intact. The isolated intermediates and their mixtures were found to remain active in water-oxidation catalysis.
These findings will be useful for the design of future novel catalysts.


Article Views: 1976

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