Abstract The crystal structures of thirteen Ag I coordination polymers involving py-CONH- (CH 2) n-py (py= pyridine; n= 0, 1) derivatives were determined by means of single-crystal X- ray analyses. All of the compounds form one-dimensional chains composed of Ag I atoms and bridging ligands with formulas {[Ag (py-CONH-(CH 2) n-py)][X]} n (X= PF 6−, ClO 4−, BF 4−, and NO 3− with solvent molecules). The unsymmetrical coordination environments ...