A bidentate ligand N, N′-bis (3-pyridinecarboxamide)-1, 6-hexane (L) and its silver complexes have been synthesized and characterized by single crystal X-ray diffraction. Reaction of AgClO4 and L in H2O/EtOH gives rise to a coordination polymer [Ag2L3OH][ClO4]· 2.5 H2O. The X-ray crystal structure of the compound shows honeycomb- like networks in which four-coordinated Ag ions are linked to three-coordinated Ag ions ...