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    Lanthanoid complexes supported by retro-Claisen condensation products of ß-triketonates.

    Access Status
    Fulltext not available
    Authors
    Abad Galán, L.
    Sobolev, A.
    Zysman-Colman, E.
    Ogden, Mark
    Massi, Massimiliano
    Date
    2018
    Type
    Journal Article
    
    Metadata
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    Citation
    Abad Galán, L. and Sobolev, A. and Zysman-Colman, E. and Ogden, M. and Massi, M. 2018. Lanthanoid complexes supported by retro-Claisen condensation products of ß-triketonates. Dalton Transactions. 47: pp. 17469-17478.
    Source Title
    Dalton Transactions
    DOI
    10.1039/c8dt03585g
    ISSN
    1477-9234
    School
    School of Molecular and Life Sciences (MLS)
    URI
    http://hdl.handle.net/20.500.11937/73272
    Collection
    • Curtin Research Publications
    Abstract

    ß-Triketonates have been recently used as chelating ligands for lanthanoid ions, presenting unique structures varying from polynuclear assemblies to polymers. In an effort to overcome low solubility of the complexes of tribenzoylmethane, four ß-triketones with higher lipophilicity were synthesised. Complexation reactions were performed for each of these molecules using different alkaline bases in alcoholic media. X-ray diffraction studies suggested that the ligands were undergoing decomposition under the reaction conditions. This is proposed to be caused by in situ retro-Claisen condensation reactions, consistent with two examples that have been reported previously. The lability of the lanthanoid cations in the presence of a varying set of potential ligands gave rise to structures where one, two, or three of the molecules involved in the retro-Claisen condensation reaction were linked to the lanthanoid centres. These results, along with measurements of ligand decomposition in the presence of base alone, suggest the solvent used will modulate the impact of the retro-Claisen condensation in these complexes.

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