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Abnormal N-heterocyclic Carbenes: More than just Exceptionally Strong Donor Ligands
Author(s)
Date Issued
2011-08-19
Date Available
2015-05-18T12:40:05Z
Abstract
Complexes comprising a so-called abnormal carbene ligand, which displays pronounced mesoionic character, have recently been shown to be competent catalyst precursors for bond activation processes and oxidative transformations, including base-free alcohol oxidation and water oxidation. In this highlight we propose that these abnormal carbene ligands are not just useful spectator ligands but also actively participate in the bond activation step. This mode of action is partially based on the exceptionally strong donor properties of the ligand and, specifically, on the mesoionic character of these abnormal carbenes. The mesoionic properties provide a reservoir for charges and holes and thus induce efficient ligand-metal cooperativity, which is beneficial in particular for oxidation catalysis that involves concerted proton and electron transfer processes.
Sponsorship
European Research Council
Other Sponsorship
Swiss National Science Foundation
Alfred Werner Foundation
Sasol Ltd.
Type of Material
Journal Article
Publisher
CSIRO Publishing
Journal
Australian Journal of Chemistry
Volume
64
Issue
8
Start Page
1113
End Page
1117
Copyright (Published Version)
2011 CSIRO
Language
English
Status of Item
Peer reviewed
This item is made available under a Creative Commons License
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