BIDENTATE LIGAND TRANSFER-REACTIONS BETWEEN GOLD(I) COMPLEXES

Reactions of the cationic derivative [Au-2(mu-Ph(2)PCH(2)PPh(2))(2)][ClO4](2) with [AuX(2)](-) (X = Cl or Br) in a 1:1 or a 1:2 molar ratio afforded tri- or di-nuclear derivatives. respectively. Neutral complexes [Au-2(mu-L-L)(2)] [L-L = S(2)CNR(2) (R = Me or CH(2)Ph)] or [Au-n(mu-L-L)(n)] [L-L = S(2)COR (R = Me or Et) or C5H4NS] react with the cationic [Au(PPh(3))(2)]ClO4 in 1:2 molar ratio, to give open ring complexes [{Au(PPh(3))}(2)(mu-L-L)]ClO4. Reactions of the neutral complexes [Au,(mu-S,CNR,),] (R = Me or CH,Ph) with cationic [Au-2(mu-P-P)(2)][ClO4](2) (P-P = Ph(2)PCH(2)PPh(2) or Ph(2)PCH(2)CH(2)PPh(2)) led to the heterobridged dinuclear complexes [Au-2(mu-S(2)CNR(2)) (mu-P-P)]ClO4. All these processes proceed via donor-acceptor intermediates, with bidentate ligand transfer.