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Z. Naturforsch. 2013,
68b, 1173 – 1179
doi:10.5560/ZNB.2013-3223
Bis(triphenylphosphine)gold(I) Perrhenate
1 Department Chemie, Technische Universität München, 85747 Garching, Germany
2 Chemistry Department, King Abdulaziz University, Jeddah 21589, Saudi Arabia
Reprint requests to PD Dr. F. Kraus E-mail:
florian.kraus@tum.de and Prof. Dr. H. Schmidbaur
h.schmidbaur@lrz.tum.de
Received August 13, 2013 / published online November 4, 2013
Dedicated to Professor Bernd Krebs on the occasion of his 75th birthday
Bis(triphenylphosphine)gold(I) perrhenate [Ph3PAuPPh3]+ReO4− has been prepared in high yield from Ph3PAuCl, Ph3P and AgReO4 in a mixed solvent. The compound is stable in air and decomposes at 235 °C. In the crystal structure, the two independent perrhenate anions are not approaching the gold centers of the two independent cations, but weak interionic interactions are entertained via π-π stacking of phenyl groups and C–H···O contacts. As three-blade chiral rotors, the Ph3P ligands of the cations are in a staggered conformation at the gold atoms with only slightly bent P–Au–P axes. IR and NMR data show no anomalies and are close to those of alkali or onium perrhenates.
Key words: Gold(I), Rhenate(VII), Crystal Structure, IR Spectra, Phosphine