SYNTHESIS OF BINUCLEAR AND TETRANUCLEAR SULFUR YLIDE COMPLEXES OF GOLD(I) BY PHASE-TRANSFER-CATALYSIS TECHNIQUES

The luminescent binuclear sulfur ylide gold compound {Au2(dppm)[(CH2)2S(O)N(CH3)2]}BF4 (1; dppm = Ph2PCH2PPh2) and the tetranuclear sulfur ylide gold compound {Au4(dppm)(Ph2PCHPPh2)[(mu-CH)(CH2)S(O)N-(CH3)2]}BF4 (2) have been synthesized by phase-transfer-catalysis techniques. Crystal structure studies show that the molecules of 1 are packed pairwise with shorter inter- than intramolecular Au...Au distances and that 2 has triply bridging Ph2PCHPPh2- and (CH)(CH2)S(O)N-(CH3)2(2-) ligands.