University of Oulu

Lamprecht, Z., Malan, F. P., Lotz, S., & Bezuidenhout, D. I. (2021). Synthesis and structure of thienyl Fischer carbene complexes of PtII for application in alkyne hydrosilylation. New Journal of Chemistry, 45(14), 6220–6230.

Synthesis and structure of thienyl Fischer carbene complexes of PtII for application in alkyne hydrosilylation

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Author: Lamprecht, Zandria1; Malan, Frederick P.1; Lotz, Simon1;
Organizations: 1Department of Chemistry, University of Pretoria, Private Bag X20, Hatfield 0028, Pretoria, South Africa
2Laboratory 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, 1.9 MB)
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Language: English
Published: Royal Society of Chemistry, 2021
Publish Date: 2021-04-29


Transmetallation of group 6 thienylene Fischer carbene complexes to PtII precursors yielded new examples of neutral platinum(II) bisethoxycarbene complexes with either 2-thienyl (T) or 5-thieno[2,3-b]thienylene (TT) carbene substituents. The use of analogous aminocarbene group 6 precursors proceeded to give isomeric platinum(II) product mixtures where the resultant bisaminocarbene ligands displayed different orientations due to restricted rotation around the Pt–aminocarbene bond caused by the sterically demanding TT substituents. The well-defined PtII ethoxycarbene complexes were screened as catalyst precursors in the benchmark hydrosilylation reaction employing phenylacetylene and triethylsilane substrates. Marked selectivity for the β-E isomer (E)-triethyl(styryl)silane was observed, and the (pre)catalysts proved recyclable, active in solvent-free reactions, and displaying a high alkyne functional group tolerance.

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Series: New journal of chemistry
ISSN: 1144-0546
ISSN-E: 1369-9261
ISSN-L: 1144-0546
Volume: 45
Issue: 14
Pages: 6220 - 6230
DOI: 10.1039/D1NJ00791B
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 105740; NRF 105529, NRF 87788 and NRF 9772) and Sasol Technology R&D Pty. Ltd. (South Africa) for financial support.
Dataset Reference: Supplementary files
Copyright information: This journal is © The Royal Society of Chemistry and the Centre National de la Recherche Scientifique 2021. Open Access Article. Published on 16 March 2021. This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.