Z. Naturforsch. 2013, 68b, 853 – 859
Crystal Structures of the Gold(I) Phosphinine Complexes [AuCl(C5H2P-2,6-Me2-4-Ph)] and [AuCl(C5H2P-2,4,6-Ph3)]
Jonathan Stott, Clemens Bruhn and Ulrich Siemeling
Institut für Chemie, Universität Kassel, Heinrich-Plett-Straße 40, 34132 Kassel, Germany
Reprint requests to Prof. Dr. Ulrich Siemeling. Fax: +49 561 804 4777. E-mail: siemeling@uni-kassel.de
Received June 14, 2013 / published online July 25, 2013
The gold(I) phosphinine complexes [AuCl(C5H2P-2,6-Me2-4-Ph)] and [AuCl(C5H2P-2,4,6-Ph3)] were prepared and structurally characterised by single-crystal X-ray diffraction studies. In the former case, individual molecules are aggregated in the crystal as crossed dimers with an Au···Au distance of 3.60 Å, compatible with a weak aurophilic interaction. In the latter case, intermolecular Au··· π interactions involving the phosphinine ring are observed with Au···C distances in the range from ca. 3.32 to 3.44 Å, which make [AuCl(C5H2P-2,4,6-Ph3)] the first structurally characterised example of intermolecular Au··· π interactions involving a heteroarene.
Key words: Aurophilicity, Crystal Structure, Gold, Gold-π Interaction, Phosphinine
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