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  • Synthesis, structure and cytotoxicity studies of four-coordinate bis (cis-bis(diphenylphosphino)ethene) gold(I) complexes, [Au(dppey)2]X

    Author(s)
    Healy, Peter C
    Loughrey, Bradley T
    Williams, Michael L
    Parsons, Peter G
    Griffith University Author(s)
    Healy, Peter C.
    Williams, Michael L.
    Loughrey, Bradley T.
    Year published
    2010
    Metadata
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    Abstract
    Four-coordinate 1:2 gold(I) complex salts with cis-bis(diphenylphosphino)ethene, [Au(dppey)2]X have been synthesized for X = PF6-, CF3SO3-, BF4-, Cl-, Br- and BPh4- and characterized by NMR spectroscopy and electrospray mass spectrometry. Single crystal X-ray structure determinations show the BF4-, Cl- and Br- complexes to be isostructural, although with different degrees of hydration, while the BPh4- complex crystallizes as an acetone solvate with two molecules in the asymmetric unit. The Au(P-P)2 core for the BF4-, Cl- and Br- complexes adopts D2 symmetry with Au-P bond lengths 2.3980(7)-2.4009(7) Šand inter-ligand P-Au-P ...
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    Four-coordinate 1:2 gold(I) complex salts with cis-bis(diphenylphosphino)ethene, [Au(dppey)2]X have been synthesized for X = PF6-, CF3SO3-, BF4-, Cl-, Br- and BPh4- and characterized by NMR spectroscopy and electrospray mass spectrometry. Single crystal X-ray structure determinations show the BF4-, Cl- and Br- complexes to be isostructural, although with different degrees of hydration, while the BPh4- complex crystallizes as an acetone solvate with two molecules in the asymmetric unit. The Au(P-P)2 core for the BF4-, Cl- and Br- complexes adopts D2 symmetry with Au-P bond lengths 2.3980(7)-2.4009(7) Šand inter-ligand P-Au-P angles 114.78(2)-127.82(2))஠The Au(P-P)2 core in the BPh4- complex is unsymmetrical with Au-P bond lengths 2.364(1)-2.420(1) Šand inter-ligand P-Au-P angles 104.76(5)-137.50(4)஠In vitro cytotoxicity studies show the PF6-, CF3SO3-, BF4-, Cl-, Br- and I- complexes to be potent and selective growth inhibitors of the human cell lines MCF7 (hormone-dependent breast cancer), MDA-MB-231 (hormone-independent breast cancer), MM96L (melanoma), CI80-13S (cisplatin resistant ovarian cancer) and a normal cell line NFF (neonatal foreskin fibroblasts), achieving IC50 values between 13 and 196 nM. The halogen and triflate salts were approximately twice as potent towards the MCF7 and MDA-MB-231 cell lines compared to the PF6- and BF4- derivatives; while the cytotoxicity of all complexes towards the sensitive CI80-13S and MM96L cancer cell lines was approximately 10-fold greater than that displayed towards the normal human cell line (NFF).
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    Journal Title
    Journal of Inorganic Biochemistry
    Volume
    104
    Issue
    6
    DOI
    https://doi.org/10.1016/j.jinorgbio.2010.02.003
    Subject
    Bioinorganic Chemistry
    Structural Chemistry and Spectroscopy
    Inorganic Chemistry
    Theoretical and Computational Chemistry
    Other Chemical Sciences
    Publication URI
    http://hdl.handle.net/10072/32417
    Collection
    • Journal articles

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