HYPERCOORDINATED GOLD(I) COMPOUNDS - 5 - REACTIONS OF COMPLEX SALTS OF MONOVALENT GOLD WITH BIMETALLIC LI,K DERIVATIVES OF O-CRESOL AND O-THIOPHENOL

The reaction of [O(AuPPh3)(3)](+)BF4(-) with a Li,K derivative of o-cr esol followed by the interaction of the reaction product with CO2 gave (triphenylphosphine)gold acetate. The reaction of ClAuPPh3 with o-LiC 6H4SLi afforded (triphenylphosphine)go Id thiophenoxide. According to the data of X-ray structural analysis, the latter occurs as a dimer fo rmed through an intermolecular secondary Au...Au bond. The reaction of this complex with diazomethane was accompanied by insertion of carben e into the Au-S bond to form a new gold complex, PhSCH2AuPPh3. The rea ctions with PPh3Au+BF4- or HBF4 yielded a new tetranuclear gold thiocl uster, {[PhS(AuPPh3)(2)](2+)(BF4-)}(2), which involves Au...Au bonds t hat differ in strength. The structures of the compounds obtained were established by X-ray structural analysis, H-1 and P-31 NMR spectroscop y, and FAB mass spectrometry.