tert-Butylphosphin-Komplexe von Gold(I)-und Silber(I)-halogeniden/tert-Butylphosphine Complexes of Gold(I) and Silver(I) Halides

Abstract

Abstract From HAuCl4 and tri-tert-butyl phosphine in methanol the gold(I) complex [(CH3)3C]3P-Au-Cl (1) has been synthesized and converted into the bromide 2 and iodide 3, using KBr and KI, respectively, in acetone solvent. The corresponding P-Cl functional complexes [(CH3)3C]2PCl-AuCl (4) and (CH3)3CPCl2 - AuCl (5) could be obtained from (carbonyl)gold chloride ClAu(CO) and the chlorophosphine in benzene, with evolution of CO. The di-tert-butyl-phosphine analog, [(CH3)3C]2PH - AuCl (7) results from a lowtemperature reduction of HAuCl4 with this phosphine. All these gold(I) complexes are soluble in many solvents as monomers. The corresponding silver compounds, prepared from [(CH3)3C]3P and AgCl, Br, I in an inert solvent, appear to be oligomers, however, and showed dimer or tetramer association in halocarbon or benzene solvent. Infrared and 1H, 13C, 31P NMR spectra have been used for further characterization of the compounds.