University of Oulu

Ramollo, G., Strydom, I., Fernandes, M., Lemmerer, A., Ojwach, S., van Wyk, J., Bezuidenhout, D., Fischer Carbene Complexes of Iridium(I) for Application in Catalytic Transfer Hydrogenation. Inorg. Chem. 2020, 59, 7, 4810–4815.

Fischer carbene complexes of iridium(I) for application in catalytic transfer hydrogenation

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Author: Ramollo, G. Kabelo1; Strydom, Ian2; Fernandes, Manuel A.1;
Organizations: 1Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, Johannesburg 2050, South Africa
2Chemistry Department, University of Pretoria, Private Bag X20, Hatfield 0028, Pretoria, South Africa
3School of Chemistry and Physics, University of KwaZulu-Natal, Private Bag X01, Scottsville, Pietermaritzburg, South Africa
4Laboratory 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, 2 MB)
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Language: English
Published: American Chemical Society, 2020
Publish Date: 2020-06-02


New examples of the very rare class of iridium(I) Fischer carbene complexes (FCCs) are reported from the facile transmetalation from group 6 FCCs. Postcomplexation modification of either the carbene ligand or the ancillary coligands results in a tunable IrI metal center, for unprecedented application as a (pre)catalyst in a benchmark transfer hydrogenation reaction. The introduction of an aminocarbene ligand with a pendant N-donor moiety capable of hemilabile coordination yielded the best catalytic results with turnover frequencies reaching 445 h–1 and requiring 0.1 mol % catalyst and 0.5 mol % base loading, respectively.

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Series: Inorganic chemistry
ISSN: 0020-1669
ISSN-E: 1520-510X
ISSN-L: 0020-1669
Volume: 59
Issue: 7
Pages: 4810 - 4815
DOI: 10.1021/acs.inorgchem.0c00079
Type of Publication: A1 Journal article – refereed
Field of Science: 116 Chemical sciences
215 Chemical engineering
Funding: The authors gratefully acknowledge the National ResearchFoundation, South Africa (NRF 115642; NRF 94784; NRF100119; NRF 111705), University of KwaZulu-Natal (S.O.O.),and Sasol Technology R&D Pty. Ltd. (South Africa) forfinancial support (D.I.B.).
Dataset Reference: The Supporting Information is available free of charge at
Copyright information: © 2020 American Chemical Society. This is an open access article published under a Creative Commons Attribution (CC-BY) License, which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited.