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

Kahan, Rachel J, Farnaby, Joy H, Tsoureas, Nikolaos, Cloke, F Geoffrey N, Hitchcock, Peter B, Coles, Martyn P, Roe, S Mark and Wilson, Claire (2018) Sterically encumbered mixed sandwich compounds of uranium(III): synthesis and reactivity with small molecules. Journal of Organometallic Chemistry, 857. pp. 110-122. ISSN 0022-328X

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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: Article
Keywords: Uranium, Organoactinide, Small molecule activation, Carbonyl, Oxocarbons
Schools and Departments: School of Life Sciences > Biochemistry
School of Life Sciences > Chemistry
SWORD Depositor: Mx Elements Account
Depositing User: Mx Elements Account
Date Deposited: 01 Nov 2021 08:45
Last Modified: 15 Dec 2021 09:29
URI: http://sro.sussex.ac.uk/id/eprint/102577

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