Sterically encumbered mixed sandwich compounds of uranium(III): Synthesis and reactivity with small molecules

Kahan, R. J., Farnaby, J. H. , Tsoureas, N., Cloke, F. G. N., Hitchcock, P. B., Coles, M. P., Roe, S. M. and Wilson, C. (2018) Sterically encumbered mixed sandwich compounds of uranium(III): Synthesis and reactivity with small molecules. Journal of Organometallic Chemistry, 857, pp. 110-122. (doi: 10.1016/j.jorganchem.2017.10.038)

Abstract

A series of uranium(III) mixed sandwich complexes with sterically demanding CpR ligands, of the type [U(COTTIPS2)(CpR)] (CpR = CptBu (C5H4tBu), CptBu2 (C5H3tBu2-1,3), CptBu3 (C5H2tBu3-1,2,4), CpTIPS2 (C5H3(SiiPr3)2-1,3), CpMe4Bz (C5Me4CH2Ph), IndMe6 (C9HMe6) and IndMe7 (C9Me7), and COTTIPS2 = C8H6(SiiPr3)2-1,4), have been synthesised and their X-ray crystal structures determined. The reactivity of these complexes with CO and CO2 is reported, including the squarate complex [U(COTTIPS2)(IndMe6)]2(μ-C4O4), IR data on the long-lived carbonyl complex [U(COTTIPS2)(IndMe7)(CO)] and the carbonate complex [U(COTTIPS2)(CptBu)]2(μ-η1:η2-CO3). The Solid-G algorithm has been to assess the steric properties of these and previously reported mixed-sandwich complexes in the solid state and correlate these properties with the observed reactivity.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Farnaby, Dr Joy and Wilson, Dr Claire
• Authors: Kahan, R. J., Farnaby, J. H., Tsoureas, N., Cloke, F. G. N., Hitchcock, P. B., Coles, M. P., Roe, S. M., and Wilson, C.
• College/School: College of Science and Engineering > School of Chemistry
• Journal Name: Journal of Organometallic Chemistry
• Publisher: Elsevier
• ISSN: 0022-328X
• ISSN (Online): 1872-8561
• Published Online: 31 October 2017
• Copyright Holders: Copyright © 2017 Elsevier B.V.
• First Published: First published in Journal of Organometallic Chemistry 857:110-122
• Publisher Policy: Reproduced in accordance with the publisher copyright policy