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Issue 4, 2012
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Magnetic communication and reactivity of a stable homometallic cation–cation trimer of pentavalent uranyl

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Abstract

The reaction of the UO2+ precursor [(UO2Py5)(KI2Py2)]n, with the potassium salt of the tetradentate aza β-diketiminate ligand L (L = 2-(4-tolyl)-1,3-bis(quinolyl)malondiiminate) affords the first homometallic cation–cation complex of pentavalent uranyl. The complex [UO2L]3 has a new triangular geometry of the cation–cation interaction in the solid state, which gives rise to a clear magnetic interaction with a maximum in the plot of χ versus T at 12 K. It retains its solid state trinuclear structure in solution and is fully stable in organic anaerobic solvents, but reacts rapidly with molecular oxygen to form a rare dinuclear oxo complex of uranyl(VI), ([UO2(L)]22-O]).

Graphical abstract: Magnetic communication and reactivity of a stable homometallic cation–cation trimer of pentavalent uranyl

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Publication details

The article was received on 10 Oct 2011, accepted on 13 Dec 2011 and first published on 04 Jan 2012


Article type: Edge Article
DOI: 10.1039/C2SC00782G
Citation: Chem. Sci., 2012,3, 1075-1079
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    Magnetic communication and reactivity of a stable homometallic cation–cation trimer of pentavalent uranyl

    L. Chatelain, V. Mougel, J. Pécaut and M. Mazzanti, Chem. Sci., 2012, 3, 1075
    DOI: 10.1039/C2SC00782G

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