Wang, Qingyang, Manzano, Richard A., Tinnermann, Hendrik, Sung, Simon, Leforestier, Baptiste, Krämer, Tobias and Young, Rowan D. (2021) Access to and Reactivity of Fe 0 , Fe −I , Fe I , and Fe II PC carbene P Pincer Complexes. Angewandte Chemie, 133 (33). pp. 18316-18325. ISSN 0044-8249
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Abstract
Despite their promising metal–ligand cooperative
reactivity, PCcarbeneP pincer ligands are rarely reported for firstrow transition-metal centres. Using a dehydration methodology, we report access to an Fe0 PCcarbeneP pincer complex (1) that proceeds via an isolated a-hydroxylalkyl hydrido complex (3). Reversible carbonyl migration to the carbene position in 1 is found to allow coordination chemistry and E@H bond addition (E = H, B, Cl) across the iron–carbene linkage, representing a unique mechanism for metal–ligand cooperativity. The PCcarbeneP pincer ligand is also found to stabilize formal FeII, Fe I, and Fe@I
oxidation states, as demonstrated with synthesis and characterization of the complexes [11-X]-[BArF
20] (X = Br, I), 12, and K[13]. Compound K[13] is
found to be highly reactive, and abstracts hydrogen from
a range of aliphatic C@H sources. Computational analysis by
DFT suggests that the formal FeI and Fe@I complexes contain
significant carbene radical character. The ability of the
PCcarbeneP ligand scaffold to partake in metal–ligand cooperativity and to support a range of iron oxidation states renders it as potentially useful in many catalytic applications
Item Type: | Article |
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Additional Information: | Cite as: Q. Wang, R. A. Manzano, H. Tinnermann, S. Sung, B. Leforestier, T. Krämer, R. D. Young, Angew. Chem. 2021, 133, 18316. |
Keywords: | PCcarbeneP pincer ligands; Reactivity of Fe 0;PCcarbeneP |
Academic Unit: | Faculty of Science and Engineering > Chemistry Faculty of Science and Engineering > Research Institutes > Hamilton Institute |
Item ID: | 17438 |
Identification Number: | 10.1002/ange.202104130 |
Depositing User: | Tobias Kraemer |
Date Deposited: | 17 Aug 2023 11:12 |
Journal or Publication Title: | Angewandte Chemie |
Publisher: | Wiley on line |
Refereed: | Yes |
Related URLs: | |
URI: | https://mu.eprints-hosting.org/id/eprint/17438 |
Use Licence: | This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here |
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