Synthesis and Small Molecule Reactivity of Uranium(IV) Alkoxide Complexes with both Bound and Pendant N‐heterocyclic Carbene Ligands
- 26 September 2005
- journal article
- research article
- Published by Wiley in Chemistry – A European Journal
- Vol. 11 (20) , 6095-6099
- https://doi.org/10.1002/chem.200500481
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.Keywords
This publication has 36 references indexed in Scilit:
- Bent metal carbene geometries in amido N-heterocyclic carbene complexesChemical Communications, 2004
- Rhenium(V) Oxo Complexes with N-Heterocyclic CarbenesInorganic Chemistry, 2004
- Amine elimination synthesis of a titanium(IV) N-heterocyclic carbene complex with short intramolecular Cl⋯CcarbenecontactsChemical Communications, 2004
- A Highly Stable N-Heterocyclic Carbene Complex of Trichloro-oxo-vanadium(V) Displaying Novel Cl−Ccarbene Bonding InteractionsJournal of the American Chemical Society, 2003
- Synthesis and structure of N-heterocyclic carbene complexes of uranyl dichlorideChemical Communications, 2001
- Structure of UMoO5 studied by single-crystal X-ray diffraction and high-resolution transmission electron microscopyActa crystallographica Section B, Structural science, crystal engineering and materials, 1996
- Synthesis of Cyclic Diamino-Substituted Metal Carbene ComplexesOrganometallics, 1996
- Derivate des Imidazols, VI. Stabile Carben‐BoraneEuropean Journal of Inorganic Chemistry, 1993
- Lewis base adducts of uranium triiodide: a new class of synthetically useful precursors for trivalent uranium chemistryInorganic Chemistry, 1989
- Crystal and molecular structures of thorium and uranium tetrakis(hexafluoroacetonylpyrazolide) complexesInorganic Chemistry, 1976