(E)-1-[(2-Amino-5-nitro-phen-yl)iminio-meth-yl]naphthalen-2-olate.

ABSTRACT: The title Schiff base compound, C(17)H(13)N(3)O(3), crystallizes in a zwitterionic form and exists in a trans configuration about the C=N bond. The mol-ecule is slightly twisted, the dihedral angle between the benzene ring and naphthalene ring system being 10.80?(9)°. The nitro group is twisted relative to the plane of the benzene ring [dihedral angle = 8.88?(12)°]. Bifurcated intra-molecular N-H?N and N-H?O hydrogen bonds formed between iminium groups and amine N atoms and naphthalen-2-olate O atoms generate S(5) and S(6) ring motifs, respectively. In the crystal, neighbouring zwitterions are linked through weak C-H?O inter-actions, giving rise to screw chains along [010]. Mol-ecules in these chains are linked to those of an adjacent chains through N-H?O hydrogen bonds and weak C-H?O inter-actions, forming sheets parallel to the ac plane. O?C [2.895?(3)?Å] short contacts and ?-? inter-actions [centroid-centroid distance = 3.8249?(19)?Å] are also observed.

SUBMITTER: Farag AM 

PROVIDER: S-EPMC2979134 | biostudies-literature | 2010 Apr

REPOSITORIES: biostudies-literature