%0 Journal Article
%T 1H-Benzotriazol-1-yl 4-{(E)-[4-(dimethylamino)phenyl]diazenyl}benzoate
%A Abdelkrim El-Ghayoury
%A Leokadiya Zorina
%A Mostafa Khouili
%J Acta Crystallographica Section E
%D 2013
%I International Union of Crystallography
%R 10.1107/s1600536813000846
%X The title compound, C21H18N6O2, was obtained as a by-product of a reaction between (E)-4-(4-dimethylaminophenylazo)benzoic acid and 2-amino-4-(2-pyridyl)-6-(6-pyridyl)-1,3,5-triazine, which has a very low solubility, under peptidic coupling conditions, using THF as solvent. The condensation reaction occurred between 1-hydroxybenzotriazole and (E)-4-(4-dimethylaminophenylazo)benzoic acid. The dihedral angle between the benzene rings in the (E)-diphenyldiazene fragment is 10.92 (13)¡ã and that between the benzotriazole mean plane and the central benzene ring is 80.57 (7)¡ã. In the crystal, ¦Ð¨C¦Ð stacking [centroid¨Ccentroid distances = 3.823 (2) and 3.863 (2)  ] of similar fragments generates molecular layers parallel to (0-12). The crystal packing also features weak C¡ªH...N hydrogen bonds involving N atoms of the benzotriazole ring.
%U http://scripts.iucr.org/cgi-bin/paper?S1600536813000846