Synthesis and crystal structures of three novel coordination polymers constructed from Ag(I) thiocyanate and nitrogen donor ligands

Abstract

Three supramolecular coordination polymers (SCPs) [(AgSCN) 2L] {L = 4,4′-bipyridine (bpy) ( 1), trans-1,2-bis(4-pyridyl)ethylene (tbpe) ( 2) and phenazine (phenz) ( 3)} have been synthesized and structurally characterized by single-crystal X-ray diffraction. Synthesis was affected in H 2O/acetonitrile/NH 3 media at room temperature. The bpy, tbpe and phenz bipodal ligands adopt different conformations which would affect the skeleton of the (AgSCN) n building blocks that allow the interconnection of the (AgSCN) n fragments and propagation of the network structure in three dimensions. Supramolecular interactions such as hydrogen-bonding, argentophilic interaction and π–π stacking play an important role in the assembly of these coordination polymers.