SYNTHESES AND REACTIVITY OF ACETYLIDE-CONTAINING CLUSTERS OF GROUP-1B METALS .8. PREPARATION, CHARACTERIZATION AND POSSIBLE STRUCTURE OF A NOVEL PENTANUCLEAR TRIMETALLIC CLUSTER [AU3AGCU(C2PH)6]- - REACTIONS OF PENTANUCLEAR AND TRINUCLEAR ACETYLIDE COMPLEXES

The novel pentanuclear trimetallic cluster [Au3AgCu(C2Ph)6]- has been prepared by the reactions of [Au3Cu2(C2Ph)6]- with a mixture of gold phenylacetylide and silver phenylacetylide, of [Au3Ag2(C2Ph)6]- with [AuCu(C2Ph)2n], or of [Au2Cu(C2Ph)4]- with [AuAg(C2Ph)2n]. Its possible structure is discussed. The conversion of the pentanuclear clusters [Au3Cu2(C2Ph)6]- and [Au3Ag2(C2Ph)6]- into the high polynuclearity trimetallic cluster [AuAg6Cu6(C2Ph)14]- and of [Ag4Cu(C2Ph)6]- into the complex [Ag6Cu7(C2Ph)14]- is described. The reactions of [Au2Cu(C2Ph)4]- with PPh3, P(OMe)3, and CuCl, and those of [Au2CuCl(C2Ph)4]2- with [AuCu(C2Ph)2n], a mixture of [Ag(C2Ph)n] and V76 [Cu(C2Ph)n], and CuCl are reported. © 1990.