A Supramolecular Ladderlike Structure Formed by the Auto-Assembly of Benzene-1,3,5-triphosphonic Acid

Abstract

Benzene-1,3,5-triphosphonic acid 1, which is the phosphonic acid analogue of trimesic acid, forms a columnar packing in the solid state that is characterized by strong hydrogen bonds (contact distances O···O ranging from 2.55 to 2.60 Å) and π-stacking (d(Ar···Ar) = 3.89 and 3.69 Å) involving the aromatic rings, thus designing an organic supramolecular ladder structure by auto-assembly.