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Dipl.-Chem. Franz Scherbaum, Andreas Grohmann, Dipl.-Chem. Brigitte Huber, Prof. Dr. Carl Krüger and Prof. Dr. Hubert Schmidbaur “Aurophilicity” as a Consequence of Relativistic Effects: The Hexakis(triphenylphosphaneaurio)methane Dication [(Ph3PAu)6C]2⊕ Angewandte Chemie International Edition in English 27

Version of Record online: 22 DEC 2003 | DOI: 10.1002/anie.198815441

Thumbnail image of graphical abstract

The class of “porcupine compounds”, includes the title cation 1, whose structure has been determined as the BPh4 salt. The analytically, mass-spectrometrically and crystallographically detected interstitial C atom occupies the crystallographic inversion center in an octahedron composed of gold atoms: the structure is probably stabilized by AuċAu interactions. The periphery of tetraauriomethanes is apparently “aurophile” with respect to further LAu ions, so that the hypervalent complex cation [C(AuL)6]2⊕ is formed spontaneously. The supposedly uncentered octahedral cluster cations formulated previously as (AuL)math image were in fact probably indentical with the C-centered species described here.

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