Synthesis and small molecule reactivity of uranium(IV) alkoxide complexes with both bound and pendant N-heterocyclic carbene ligands

Arnold, P. L., Blake, A. J. and Wilson, C. (2005) Synthesis and small molecule reactivity of uranium(IV) alkoxide complexes with both bound and pendant N-heterocyclic carbene ligands. Chemistry: A European Journal, 11(20), pp. 6095-6099. (doi: 10.1002/chem.200500481) (PMID:16052659)

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Abstract

The syntheses of two tetravalent uranium alkoxide‐carbene complexes are reported, [UIL3], and [UL4] where L=OCMe2CH2[1‐C(NCHCHNiPr)]. The latter shows dynamic behaviour of the alkoxycarbene ligands in solution at room temperature, and the crystal structure of [UL4] shows that one carbene group remains uncoordinated. The unbound N‐heterocyclic carbene group is trapped by a range of reagents such as 16‐valence‐electron metal carbonyl fragments and BH3 moieties, forming, for example, [UL3(μ‐L)W(CO)5], [UL2(μ‐L)2Mo(CO)4], and [ULn(L‐BH3)4−n] (n=1–4), demonstrating the potential for these hemilabile electropositive metal–carbene complexes to participate in the bifunctional activation of small molecules.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Wilson, Dr Claire
Authors: Arnold, P. L., Blake, A. J., and Wilson, C.
College/School:College of Science and Engineering > School of Chemistry
Journal Name:Chemistry: A European Journal
Publisher:Wiley
ISSN:0947-6539
ISSN (Online):1521-3765
Published Online:29 July 2005

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