3-(O-CARBOXYPHENYL)-1-ETHYLTRIAZENE 1-OXIDE

The structure determination of the title compound, C9H11N3O3. establis hes the N-oxide form of triazene. The two independent molecules in the asymmetric unit are hydrogen bonded and have different conformations. One molecule is essentially planar, while in the other molecule, the terminal ethyl and carboxy groups deviate considerably from the corres ponding molecular plane. The planar phenyl ring and the trigonal-plana r geometry about the triazene N atom bonded to the phenyl ring suggest a resonance interaction extending over adjacent atoms. Intermolecular hydrogen bonds link the molecules into infinite chains.