title: (E)-1-(3-Chloro-phen-yl)-2-(2-oxidonaphthalen-1-yl)diazen-1-ium.
abstract: The title zwitterion,, C16H11ClN2O, is approximately planar, the dihedral angle between the benzene ring and naphthalene ring system is 1.55 (13)°; an intra-molecular N-H⋯O hydrogen bond stabilizes the planar conformation. In the crystal, π-π stacking between the benzene ring and the naphthalene ring system of adjacent mol-ecules links the mol-ecules into supra-molecular chains running along the b axis, the centroid-centroid distance being 3.765 (2) Å.
authors.affiliation: Unité de recherche de Chimie de l'Environnement et Moléculaire Structurale, Faculté du sciences exactes, Université Mentouri de Constantine 1, 25000 Constantine, Algeria.
authors.forename: Ali
authors.initials: A
authors.lastname: Benosmane
authors.forename: Assia
authors.initials: A
authors.lastname: Mili
authors.forename: Hassiba
authors.initials: H
authors.lastname: Bouguerria
authors.forename: Abdelkader
authors.initials: A
authors.lastname: Bouchoul
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