Tsoureas, Nikolaos, Maron, Laurent, Kilpatrick, Alexander F R, Layfield, Richard A and Cloke, F Geoffrey N (2020) Ethene activation and catalytic hydrogenation by a low-valent uranium pentalene complex. Journal of the American Chemical Society, 142 (1). pp. 89-92. ISSN 0002-7863
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Abstract
The reaction of the uranium(III) complex [U(η8-Pn††)(η5-Cp*)] (1) (Pn†† = C8H4(1,4-SiiPr3)2, Cp* = C5Me5) with ethene at atmospheric pressure produces the ethene-bridged diuranium complex [{(η8-Pn††)(η5-Cp*)U}2(μ-η2:η2-C2H4)] (2). A computational analysis of 2 revealed that coordination of ethene to uranium reduces the carbon–carbon bond order from 2 to a value consistent with a single bond, with a concomitant change in the formal uranium oxidation state from +3 in 1 to +4 in 2. Furthermore, the uranium–ethene bonding in 2 is of the δ type, with the dominant uranium contribution being from f–d hybrid orbitals. Complex 2 reacts with hydrogen to produce ethane and reform 1, leading to the discovery that complex 1 also catalyzes the hydrogenation of ethene under ambient conditions.
Item Type: | Article |
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Keywords: | Organometallic, uranium, catalysis |
Schools and Departments: | School of Life Sciences > Chemistry |
Subjects: | Q Science > QD Chemistry > QD0146 Inorganic chemistry |
Depositing User: | Geoff Cloke |
Date Deposited: | 02 Jan 2020 09:51 |
Last Modified: | 20 Dec 2020 02:00 |
URI: | http://sro.sussex.ac.uk/id/eprint/88991 |
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📧 Request an updateProject Name | Sussex Project Number | Funder | Funder Ref |
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Unset | Unset | EPSRC | EP/M023885/1 |
RadMag | Unset | ERC | 646740 |