Use of the CH Acidity of 2,4,4-Trimethyl-4,5-dihydrooxazole to Synthesize Triauriomethanes and Novel Gold Clusters

Authors

  • Dipl.-Chem. Franz Scherbaum,

    1. Anorganisch-chemisches Institut der Technischen Universität München, Lichtenbergstrasse 4, D-8046 Garching (FRG)
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  • Dipl.-Chem. Brigitte Huber,

    1. Anorganisch-chemisches Institut der Technischen Universität München, Lichtenbergstrasse 4, D-8046 Garching (FRG)
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  • Dr. Gerhard Müller,

    1. Anorganisch-chemisches Institut der Technischen Universität München, Lichtenbergstrasse 4, D-8046 Garching (FRG)
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  • Prof. Dr. Hubert Schmidbaur

    Corresponding author
    1. Anorganisch-chemisches Institut der Technischen Universität München, Lichtenbergstrasse 4, D-8046 Garching (FRG)
    • Anorganisch-chemisches Institut der Technischen Universität München, Lichtenbergstrasse 4, D-8046 Garching (FRG)
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  • This work was supported by the Deutsche Forschungsgemeinschaft (Leibniz program), the Fonds der Chemischen Industrie, and Degussa AG. We thank J. Riede for measurement of the crystallographic data set and Finnigan MAT for an FAB-MS measurement.

Abstract

original image

An Aumath image cluster with an unusual structure, the dication 1, is formed in the polyauration of 2,4,4-trimethyl-4,5-dihydrooxazole. The expected dihydrooxazole with a peraurated 2-methyl group reacts further with excess Ph3PAuCl/CsF under Au1-incorporation to give 1. The highly aurated C atoms are trigonal-bipyramidally coordinated. Since the distance between the two central Au atoms is also short (2.811(1) (Å), all the eight Au atoms are components of a cluster. The counterion [Me3SiF2] was also unexpected.

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