Z. Naturforsch. 2013,
68b, 853 – 859
doi:10.5560/ZNB.2013-3155
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
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