SYNTHESIS OF LUMINESCENT TRINUCLEAR SILVER(I) ACETYLIDES OF BIS(DIPHENYLPHOSPHINO)METHANE AND BIS(DIPHENYLPHOSPHINO)-N-PROPYLAMINE - X-RAY CRYSTAL-STRUCTURES OF U(3)-ETA(1)-C-EQUIVALENT-TO-C-C6H4-NO2-P)(2)](+)() AND [AG)

A series of soluble trinuclear silver(I) complexes containing monocapp ed and bicapped acetylides, [Ag-3(LL)(3)(mu(3)-eta(1)-C=CR)](2+) and [ Ag-3(LL)(3)(mu(3)-eta(1)-C=C-C6H4-NO2-p)(2)](+) [LL=[(C6H5)(2)P](2)-CH 2 (dppm), [(C6H5)(2)P](2)(NPr)-Pr-n((PrPNP)-Pr-n)], have been synthesi zed. The X-ray crystal structures of Ag-3(mu-dppm)(3)(mu(3)-eta(1)-C=C -C6H4-NO2-p)](2+) and -3(mu-dppm)(3)(mu(3)-eta(1)-C=C-C6H4-NO2-p)(2)]( +) have been determined.