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    Influence of the para-Substituent in Lanthanoid Complexes of Bis-Tetrazole-Substituted Calix[4]arenes

    77463.pdf (3.788Mb)
    77463_supporting information.pdf (3.076Mb)
    Access Status
    Open access
    Authors
    Phe, Rene
    Skelton, B.W.
    Massi, Max
    Ogden, Mark
    Date
    2019
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Phe, R.Z.H. and Skelton, B.W. and Massi, M. and Ogden, M.I. 2020. Influence of the para-Substituent in Lanthanoid Complexes of Bis-Tetrazole-Substituted Calix[4]arenes. European Journal of Inorganic Chemistry. 2020 (1): pp. 94-100.
    Source Title
    European Journal of Inorganic Chemistry
    DOI
    10.1002/ejic.201900877
    ISSN
    1434-1948
    Faculty
    Faculty of Science and Engineering
    School
    School of Molecular and Life Sciences (MLS)
    Funding and Sponsorship
    http://purl.org/au-research/grants/arc/DP17010189
    Remarks

    This is the peer reviewed version of the following article: Phe, R.Z.H. and Skelton, B.W. and Massi, M. and Ogden, M.I. 2020. Influence of the para-Substituent in Lanthanoid Complexes of Bis-Tetrazole-Substituted Calix[4]arenes. European Journal of Inorganic Chemistry. 2020 (1): pp. 94-100., which has been published in final form at http://doi.org/10.1002/ejic.201900877. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.

    URI
    http://hdl.handle.net/20.500.11937/77242
    Collection
    • Curtin Research Publications
    Abstract

    © 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim 5,11,17,23-Tetra-tert-butyl-25,27-dihydroxy-26,28-bis(tetrazole-5-ylmethoxy)calix[4]arene has been reported to form remarkable Ln19 and Ln12 elongated clusters, upon addition of aqueous ammonium carboxylates. The impact of the para substituent on lanthanoid cluster formation has been studied by synthesising two new bis-tetrazole calixarenes, with p-H, and p-allyl substituents. Solution phase dynamic light scattering measurements of the reaction mixtures indicated that clusters are not formed with the p-H and p-allyl derivatives, in contrast with the behaviour of the tert-butyl analogue. Lanthanoid complexes of the p-H and p-allyl calixarenes were characterised by single-crystal X-ray diffraction, and were found to form mononuclear complexes, linked to form a one-dimensional coordination polymer for the p-allyl system. All of the complexes were isolated as ammonium salts, with ammonium cation included in the calixarene cavity in most cases. It is concluded that the nature of the para substituent has a profound impact on the lanthanoid cluster formation process, and derivatives with more subtle structural changes will be required to determine if additional lanthanoid “bottlebrush” clusters can be isolated.

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