Abstract
An assembly of adducts of silver nitrate and KCl and bipodal nitrogen donor ligands, 4,4'-bipyridine (bpy), trans-1,2-bis(4-pyridyl)ethylene (tbpe) or 1,2-bis(4-pyridyl)ethane (bpe), at room temperature affords new supramolecular coordination polymers (SCP), [AgCl center dot bpy] (1), [(AgCl)(2)center dot tbpe] (2) and [(AgCl)(3)center dot(bpe)(2)] (3). X-ray single crystal analyses reveal that 1-3 have 3D-supramolecular networks composed of different types of infinite 1D-ribbons of ladder, 1, and staircase, 2 and 3, structures formed from fused minicyle {Ag-2(mu(3)-Cl)(2)} motifs, which are bridged by the nitrogen donor ligands to form 2D-layers. The 2D-layers are interconnected by extensive hydrogen bonds and pi-pi stacking thereby creating 3D-networks. The products are also characterized by IR and electronic absorption spectra. SCP 1-3 display strong fluorescence in the solid state at room temperature.