Summerscales, Owen T, Cloke, F Geoffrey N, Hitchcock, Peter B, Green, Jennifer C and Hazari, Nilay (2006) Reductive Cyclotrimerization of Carbon Monoxide to the Deltate Dianion by an Organometallic Uranium Complex. Science, 311 (5762). pp. 829-831. ISSN 0036-8075

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Abstract

Despite the long history of the Fischer-Tropsch reaction, carbon monoxide has proven remarkably resistant to selective homologation under mild conditions. Here, we find that an organouranium(III) complex induces efficient reductive trimerization of carbon monoxide at room temperature and pressure. The result is a triangular, cyclic C3O32-, or deltate, dianion held between two uranium(IV) units. The bonding within the C 3O32- unit and its coordination to the two U centers have been analyzed by x-ray diffraction and density functional theory computational studies, which show a stabilizing C-C agostic interaction between the C3 core and one U center. Solution nuclear magnetic resonance studies reveal a rapid equilibration of the deltate unit between the U centers.

Item Type:	Article
Additional Information:	Main author; all experimental work done at Sussex; this paper describes an unprecedented reductive cyclotrimerisation of carbon monoxide to the aromatic deltate dianion, mediated by an organometallic complex; resulted in EPSRC Grant for a PDRA for 3 years; also highlighted in Science Perspective article, C&E News and Chemistry World.
Schools and Departments:	School of Life Sciences > Chemistry
Depositing User:	Geoff Cloke
Date Deposited:	06 Feb 2012 20:52
Last Modified:	28 Mar 2012 13:54
URI:	http://sro.sussex.ac.uk/id/eprint/28499

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