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

摘要

The new silver(1) complexes (bpeH(2) center dot 2H(2)O)[Ag-8(C-2)(CF3CO2)(8)(H2O)(2)] center dot 2H(2)O (1), [Ag-14(C-2)(2)(C2F5CO2)(10)(H2O)(4)(bpe)] center dot H2O (2), [Ag-7(C-2)(CF3CO2)(2)(cba)(3)] (3), [Ag-7(C-2)(C2F5CO2)(5)(cbaH)(H2O)(2)] (4) and (imH)(3)[Ag-8(C-2)(CF3CO2)(9)] center dot H2O (5) (bpe = trans-1,2-bis(4-pyridyl)ethylene, cbaH = 4-cyanobenzoic acid, im = imidazole) contain polyhedral silver(l) cages each encapsulating a C-2(2-) dianion. Complex 1 provides the first example of a layer-type inclusion complex constructed with C-2@Ag-n 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(l) columns to form a three-dimensional network via hydrogen bonding. (c) 2005 Elsevier Ltd. All rights reserved.