1-[4-(Diamino­methyl­eneamino­sulfon­yl)phenyl­iminiometh­yl]-2-naphtholate N,N-dimethyl­formamide disolvate

El-Ghamry, H.; Issa, R.; El-Baradie, K.; Isagai, K.; Masaoka, S.; Sakai, K.

doi:10.1107/S1600536808018710

Acta Crystallographica Section E

Structure Reports Online

Volume 64, Part 7 (July 2008)

organic compounds

Acta Cryst. (2008). E64, o1350-o1351 [ doi:10.1107/S1600536808018710 ]

1-[4-(Diaminomethyleneaminosulfonyl)phenyliminiomethyl]-2-naphtholate N,N-dimethylformamide disolvate

H. El-Ghamry, R. Issa, K. El-Baradie, K. Isagai, S. Masaoka and K. Sakai

Abstract: The asymmetric unit the title compound, C₁₈H₁₆N₄O₃S·2C₃H₇NO, contains a molecule in a zwitterionic form with a deprotonated hydroxyl group and an iminium group, and two dimethylformamide solvent molecules. The dihedral angles of the guanidine group and the naphthyl ring system with respect to the central benzene ring are 76.04 (7) and 3.45 (9)°, respectively. The conformation of the molecule may be influenced, in part, by two intramolecular hydrogen bonds, while in the crystal structure, intermolecular hydrogen bonds form one-dimensional chains along [010].