Abnormal N-heterocyclic Carbenes: More than just Exceptionally Strong Donor Ligands

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Title: Abnormal N-heterocyclic Carbenes: More than just Exceptionally Strong Donor Ligands
Authors: Krüger, Anneke
Albrecht, Martin
Permanent link: http://hdl.handle.net/10197/6571
Date: 19-Aug-2011
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.
Funding Details: European Research Council
Type of material: Journal Article
Publisher: CSIRO Publishing
Copyright (published version): 2011 CSIRO
Keywords: Catalysis;Platinum group metals
DOI: 10.1071/CH11265
Language: en
Status of Item: Peer reviewed
Appears in Collections:Chemistry Research Collection

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