Catalyst Decomposition during Olefin Metathesis Yields Isomerization-Active Ruthenium Nanoparticles

Higman, Carolyn S.; Lanterna, Anabel E.; Marin, M. Luisa; Scaiano, Juan C.; Fogg, Deryn E.

Abstract

The second‐generation Grubbs catalyst, RuCl2(H2IMes)(PCy3) (=CHPh) [GII ; H2IMes=1,3‐bis(2,4,6‐trimethylphenyl)‐4,5‐dihydroimidazol‐2‐ylidene, Cy=cyclohexyl], is shown to decompose during olefin metathesis to generate Ru nanoparticles (RuNPs). These RuNPs appear to contribute significantly to competing isomerization during metathesis. Larger, partially oxidized RuNPs are also observed in commercial GII , but these exhibit modest isomerization activity. Removal of RuNPs from the precatalyst does not prevent isomerization, because new, more reactive NPs are generated by catalyst decomposition during metathesis.

Citation

Higman, C. S., Lanterna, A. E., Marin, M. L., Scaiano, J. C., & Fogg, D. E. (2016). Catalyst Decomposition during Olefin Metathesis Yields Isomerization-Active Ruthenium Nanoparticles. ChemCatChem, 8(15), 2446-2449. https://doi.org/10.1002/cctc.201600738

• Journal Article Type: Article
• Acceptance Date: Jun 18, 2016
• Online Publication Date: Jul 28, 2016
• Publication Date: Aug 8, 2016
• Deposit Date: Jun 22, 2020
• Publicly Available Date: Jul 27, 2020
• Journal: ChemCatChem
• Print ISSN: 1867-3880
• Electronic ISSN: 1867-3899
• Publisher: Wiley
• Peer Reviewed: Peer Reviewed
• Volume: 8
• Issue: 15
• Pages: 2446-2449
• DOI: https://doi.org/10.1002/cctc.201600738
• Public URL: https://nottingham-repository.worktribe.com/output/4701643
• Publisher URL: https://chemistry-europe.onlinelibrary.wiley.com/doi/abs/10.1002/cctc.201600738
• Additional Information: This is the pre-peer reviewed version of the following article: C. S. Higman, A. E. Lanterna, M. L. Marin, J. C. Scaiano, D. E. Fogg, ChemCatChem 2016 , 8 , 2446, which has been published in final form at https://doi.org/10.1002/cctc.201600738. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.