Supramolecular assembly of some polynuclear silver(I) complexes with encapsulated acetylenediide dianion and potentially exo-bidentate ligands

The new silver(I) complexes (bpeH2 · 2H2O)[Ag8(C2)(CF3CO2)8(H2O)2] · 2H2O (1), [Ag14(C2)2(C2F5CO2)10(H2O)4(bpe)] · H2O (2), [Ag7(C2)(CF3CO2)2(cba)3] (3), [Ag7(C2)(C2F5CO2)5(cbaH)(H2O)2] (4) and (imH)3[Ag8(C2)(CF3CO2)9] · H2O (5) (bpe = trans-1,2-bis(4-pyridyl)ethylene, cbaH = 4-cyanobenzoic acid, im = imidazole) contain polyhedral silver(I) cages each encapsulating a C22- dianion. Complex 1 provides the first example of a layer-type inclusion complex constructed with C2@Agn polyhedra, whereas 2 and 3 both exhibit three-dimensional network structures, and 4 has a two-dimensional architecture. In 5, the imidazolium ions connect zig-zag anionic silver(I) columns to form a three-dimensional network via hydrogen bonding.

Five new C2@Agn-containing complexes (bpeH2 · 2H2O)[Ag8(C2)(CF3CO2)8(H2O)2] · 2H2O (1), [Ag14(C2)2(C2F5CO2)10(H2O)4(bpe)] · H2O (2), [Ag7(C2)(CF3CO2)2(cba)3] (3), [Ag7(C2)(C2F5CO2)5(cbaH)(H2O)2] (4) and (imH)3[Ag8(C2)(CF3CO2)9] · H2O (5) have been shown to exhibit a variety of supramolecular structures. Complex 1 provides the first example of a layer-type inclusion complex constructed with C2@Agn polyhedra.Figure optionsDownload as PowerPoint slide