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    Crystallographic Determination of Three Ni-a-Hydroxyoxime-Carboxylic Acid Synergist Complexes

    149361_149361.pdf (340.2Kb)
    Access Status
    Open access
    Authors
    Barnard, K.
    Nealon, Gareth
    Ogden, Mark
    Skelton, B.
    Date
    2010
    Type
    Journal Article
    
    Metadata
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    Citation
    Barnard, Keith and Nealon, Gareth and Ogden, Mark and Skelton, Brian. 2010. Crystallographic Determination of Three Ni-a-Hydroxyoxime-Carboxylic Acid Synergist Complexes. Solvent Extraction and Ion Exchange. 28 (6): pp. 778-792.
    Source Title
    Solvent Extraction and Ion Exchange
    DOI
    10.1080/07366299.2010.515169
    ISSN
    07366299
    Faculty
    Nanochemistry Research Institute (NRI)
    Faculty of Science and Engineering
    School
    Nanochemistry Research Institute (Research Institute)
    URI
    http://hdl.handle.net/20.500.11937/36764
    Collection
    • Curtin Research Publications
    Abstract

    X-ray crystal structures of three dicarboxylato-bis-a-hydroxyoximenickel(II) complexes have been obtained. These contain a short chained (C8) analogue of LIX®63 hydroxyoxime, along with either benzoate, isobutyrate or propionate. All have pseudo-octahedral structures with monodentate carboxylate anions located cis to one another and neutral, chelating a-hydroxyoxime ligands. Intra-molecular hydrogen bonding between each anionic acid's carboxylate group and an adjacent oxime hydroxyl group is evident. Inter-molecular hydrogen bonding is also observed. These provide the first definitive structural elucidation of the types of nickel complexes that could be formed during synergistic extraction by LIX®63 and carboxylic acids.

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