University of Oulu

Tshegofatso L. Mashabane, G. Kabelo Ramollo, George Kleinhans, Stephen De Doncker, Shepherd Siangwata, Manuel A. Fernandes, Andreas Lemmerer, Gregory S. Smith, Daniela I. Bezuidenhout, Tunable Rh(I) Fischer carbene complexes for application in the hydroformylation of 1-octene, Journal of Organometallic Chemistry, Volume 920, 2020, 121341, ISSN 0022-328X,

Tunable Rh(I) Fischer carbene complexes for application in the hydroformylation of 1-octene

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Author: Mashabane, Tshegofatso L.1; Ramollo, G. Kabelo1; Kleinhans, George1;
Organizations: 1Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, Johannesburg 2050, South Africa
2Department of Chemistry, University of Cape Town, 7701, Rondebosch, South Africa
3Laboratory of Inorganic Chemistry, Environmental and Chemical Engineering, University of Oulu, P. O. Box 3000, 90014 Oulu, Finland
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 0.8 MB)
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Language: English
Published: Elsevier, 2020
Publish Date: 2020-06-29


The preparation of a series of rhodium(I) complexes coordinated by various electronically tuneable Fischer carbene (FC) ligands, is reported. The Rh(I) metal complexes’ electronic properties could readily be modulated by variation of a p-N,N-dimethylaniline moiety with a ruthenocenyl substituent, or alternatively, substituting the carbene O-heteroatom for an amino-group. The electronic properties of the complexes were evaluated, and it was determined from the Tolman electronic parameters that the donor-ability of the FC ligands are comparable to N-heterocyclic carbenes. Furthermore, the facile control of the electronic properties of the complexes was demonstrated by mild oxidation of a ferrocenyl aminocarbene rhodium(I) complex, yielding the corresponding ferrocenium rhodium(I) complex cation. Finally, the complexes were evaluated as catalyst precursors for the hydroformylation of 1-octene.

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Series: Journal of organometallic chemistry
ISSN: 0022-328X
ISSN-E: 1872-8561
ISSN-L: 0022-328X
Volume: 920
Article number: 121341
DOI: 10.1016/j.jorganchem.2020.121341
Type of Publication: A1 Journal article – refereed
Field of Science: 116 Chemical sciences
Funding: The authors gratefully acknowledge the National Research Foundation, South Africa (NRF 115642; NRF 94784; NRF 100119; NRF 111705, NRF-DST Centre of Excellence in Catalysis – c∗ change (G.S·S)) and Sasol Technology R&D Pty. Ltd. (South Africa) for financial support (D.I·B).
Copyright information: © 2020 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (