N-Heterocyclic Carbenes: From Laboratory Curiosities to Efficient Synthetic Tools
CHAPTER 4: Computational Studies on the Reactivity of Transition Metal Complexes with N-Heterocyclic Carbene Ligands
Published:04 Nov 2016
Special Collection: 2016 ebook collectionSeries: Catalysis Series
D. Leboeuf and V. Gandon, in N-Heterocyclic Carbenes: From Laboratory Curiosities to Efficient Synthetic Tools, ed. S. Diez-Gonzalez, The Royal Society of Chemistry, 2nd edn, 2016, pp. 120-177.
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Computational studies on the reactivity of transition metal complexes featuring N-heterocyclic carbene (NHC) ligands are reviewed. Reactions involving the direct participation of NHC ligands are first considered, including reductive elimination, migratory insertion and cyclometalation. Subsequent sections survey processes where NHC ligands act as spectator ligands, in particular those where their electronic and steric characteristics impact on reactivity. Small molecule activation is discussed, as well as the extensive studies on the behaviour of Grubbs 2nd generation metathesis catalysts and related species.