Hypercoordinated gold(I) compounds 5. Reactions of complex salts of monovalent gold with bimetallic Li,K derivatives of o-cresol and o-thiophenol

Article abstract of DOI:10.1007/BF02498963

The reaction of [O(AuPPh₃)₃]⁺BF₄^- with a Li,K derivative of o-cresol followed by the interaction of the reaction product with CO₂ gave (triphenylphosphine)gold acetate. The reaction of ClAuPPh₃ with o-LiC₆H₄SLi afforded (triphenylphosphine)gold thiophenoxide. According to the data of X-ray structural analysis, the latter occurs as a dimer formed through an intermolecular secondary Au...Au bond. The reaction of this complex with diazomethane was accompanied by insertion of carbene into the Au - S bond to form a new gold complex, PhSCH₂AuPPh₃. The reactions with PPh₃Au⁺BF₄^- or HBF₄ yielded a new tetranuclear gold thiocluster, {[PhS(AuPPh₃)₂]²⁺(BF₄ ^-)}₂, which involves Au...Au bonds that differ in strength. The structures of the compounds obtained were established by X-ray structural analysis, ¹H and ³¹P NMR spectroscopy, and FAB mass spectrometry.