Carboranylphosphinic Acids: A New Ligand

  • Author: David Smith
  • Published Date: 31 January 2016
  • Source / Publisher: Chemistry – A European Journal/Wiley-VCH
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
thumbnail image: Carboranylphosphinic Acids: A New Ligand

Related Societies

Organophosphorus compounds, such as phosphines, phosphine oxides, phosphinates, and phosphonates, have long been established as an important class of ligands for catalysis and have also found usage in herbicides and medicines.


Clara Viñas and colleagues, Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Bellaterra, Spain, have discovered a new class of phosphorus ligand, in which the carbon linked to phosphorus is not an organic group but belongs to an inorganic boron cluster; a carborane. Carboranes are known to exhibit unusual properties, including low nucleophilicity and toxicity and high chemical and thermal stability.


The team synthesized several of these carboranylphosphinic acids (example pictured), which exhibit high stability against powerful oxidizing agents, owing to the electron-withdrawing nature of the cluster cage. The carborane also influences the pK of the phosphinate, which is significantly more negative than for the phenyl-substituted analogue. Furthermore, the space-filling properties of the carboranyl groups are expected to induce unusual geometric behavior and physicochemical properties in metal complexes, making them an attractive candidate for application in medicine or materials science.


 

This article is soon to feature in Chemistry ‒ A European Journal's up-coming "Women in Chemistry" special issue.

 

Article Views: 2776

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


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