Dihydrogenphosphate Anionic Template-Assisted Hydrogen Bonded Networks in 2-Benzylaminopyridinium and 4-Ethyoxyanilinium Dihydrogenphosphate Salts

Resumo

In the title compounds, namely 2-benzylaminopyridinium dihydrogenphosphate C₁₂H₁₃N₂⁺·H₂PO₂⁻, (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.