High-nuclearity silver ethynide clusters containing polynucleating oxygen donor ligands.

Polynucleating oxygen donor ligands as precursors have been employed to construct three high-nuclearity heterometallic ethynide clusters. Compound 2 consists of a Cl@Ag12 ethynide cluster capped by two trinuclear organooxotin phosphonate clusters [(nBuSn)3(μ3-O)(tBuPO3)3(OMe)(OH)2]2-. Compound 3 consists of a Ag8 ethynide cluster fused with a nonanuclear oxo-bismuth phosphonate cluster [Bi9O6(tBuPO3)9(tBuPO3H)]4-, while compound 4 is composed of two Cl@Ag15 ethynide clusters bridged by a hexanuclear oxo/hydroxo-bismuth phosphonate cluster [Bi6O4(OH)4(tBuPO3)6(hfac)2(CF3COO)2]10-.