Supramolecular framework incatena-poly[[(nitrato-κO)silver(I)]-μ-(R,S)-2-(pyridin-4-ylsulfinyl)pyrimidine-κ3N,O:N′]

Abstract

In the title complex, [Ag(NO3)(C9H7N3OS)]n, η1:η1:η1:μ2-bridging 2-(pyridin-4-ylsulfinyl)pyrimidine (pypmSO) ligands with opposite chiralities are alternately arranged to link the AgIcations through two N atoms and one sulfinyl O atom of each ligand, leading to an extended zigzag coordination chain structure along the [\overline{2}01] direction. An FT–IR spectroscopic study shows a decreased stretching frequency for the η1-O-bonded S=O group compared with that of the free ligand. The parallel chains are arranged and interconnectedviaO(S=O)...π(pyridine/pyrimidine) and C—H(pyridine)...O(NO3−) interactions to furnish a layer almost parallel to theacplane. Along thebaxis, the layers are stacked and stabilized through anion(NO3−)...π(pyrimidine) interactions to form a three-dimensional supramolecular framework. The ligand behaviour of the new diheterocyclic sulfoxide and the unconventional O(S=O)...π(pyridine/pyrimidine) and anion(NO3−)...π(pyrimidine) interactions in the supramolecular assembly of the title complex are presented.