Dihydrogenphosphate anionic template-assisted hydrogen bonded networks in 2-benzylaminopyridinium and 4-ethyoxyanilinium dihydrogenphosphate salts

Abstract

In the title compounds, namely 2-benzylaminopyridinium dihydrogenphosphate C12H13N2+⋅H2PO4–, (I) and 4-ethoxyanilinium dihydrogenphosphate C8H12NO+⋅H2PO4–, (II), the H2PO4– anions form a one-dimensional chain and a two-dimensional supramolecular sheet built through O—H⋯O hydrogen bonds. The asymmetric unit of II consists of two symmetry-independent molecules with almost similar geometrical parameters, differing in the orientation of cations with respect to the anions. The 2-benzylaminopyridinium cations of I are linked to the anionic one-dimensional chain, while the 4-ethoxyanilinium cations of II are anchored to the anionic two-dimensional sheet through N—H⋯O hydrogen bonds. These anion-cation interactions lead to the formation of an organic-inorganic supramolecular one-dimensional chain and two-dimensional sheets in I and II respectively. In dihydrogenphosphate salts the formation of anionic supramolecular motifs and networks are very much influenced by the nature of cations and their interaction with the H2PO4– anions.