3-{[(E)-(2-Hydroxynaphthalen-1-yl)methylidene]amino}pyridinium perchlorate

Abstract

In the title Schiff base salt, C16H13N2O+·ClO4 −, the pyridine ring and the naphthalene ring system are approximately co-planar [making a dihedral angle of 6.05 (12)°] and an intra­molecular O—H⋯N hydrogen bond occurs between the hydroxyl and imino groups. In the crystal, the cations and anions are linked by N—H⋯O and weak C—H⋯O hydrogen bonds, forming the supra­molecular layers parallel to (100). The crystal studied was an inversion twin refined with minor component = 0.43 (13).

2-{(E)-[4-(Diphenylamino)phenyl]iminomethyl}phenol

“…Schiff bases are considered important compounds because of their wide range of biological activities, and also because of their use as ligands in conjunction with transition metals (Damous et al, 2013). Schiff bases derived from salicyladehyde and methylaniline with various substituents have exhibited potential application in pharmaceutical fields for their antitumor, antimicrobial and antiviral activities (Zheng et al, 2013).…”

“…For related structures, see: Damous et al (2013); Zheng (2013). Table 1 Hydrogen-bond geometry (Å , ).…”