Title: Metal Olefin Complexes: Revisiting the<i>Dewar</i>−<i>Chatt</i>−<i>Duncanson</i>Model and Deriving Reactivity Patterns from Carbon‐13 NMR Chemical Shift
Abstract:Abstract Metal olefin complexes that are ubiquitous intermediates in catalysis are investigated by a detailed analysis of their 13 C‐NMR chemical shift tensors. This analysis allows evidencing specifi...Abstract Metal olefin complexes that are ubiquitous intermediates in catalysis are investigated by a detailed analysis of their 13 C‐NMR chemical shift tensors. This analysis allows evidencing specific electronic features, namely the olefin‐to‐metal σ ‐donation and the metal‐to‐olefin π ‐backdonation as proposed in the Dewar−Chatt−Duncanson model. Apart from these interactions, the chemical shift tensor analysis reveals an additional ligand‐to‐metal π ‐donation of the olefin σ (C=C) orbital in systems with suitably oriented vacant d‐orbitals. This interaction which is not accounted for in the Dewar−Chatt−Duncanson model explains the reactivity of this type of metal olefin complexes towards oxidative cyclization (olefin insertion) and protonolysis.Read More
Publication Year: 2019
Publication Date: 2019-08-09
Language: en
Type: article
Indexed In: ['crossref']
Access and Citation
Cited By Count: 26
AI Researcher Chatbot
Get quick answers to your questions about the article from our AI researcher chatbot