The reaction of AgNO3, 4,4'-bipyridine (bpy)/flexible 1,2-di(4-pyridyl)ethylene (dpe), diphenic acid (H(2)da) in acetic acid/alcohol aqueous solution produces, respectively, block-like crystals of [Ag-2(bpy)(2)(Hda)(2)](HAc)(2) center dot 2H(2)O (1), and [Ag-2(dpe)(2)(da)]center dot 4H(2)O (2) at room temperature. Both the above-stated compounds consist of parallel 1D infinite cationic chains, [AgL](infinity) (L=bpy and dpe), interspersed with organic da(2-) anions which play the role of charge compensation in the crystal structure. The lattice water molecules are situated among these chains, ...