Acta Cryst. (2003). E59, o601-o602  [ doi:10.1107/S1600536803007165 ]

3-Carbazoyl-5-methylpyridazin-6(1H)-one

X.-G. Cheng, Y.-Z. Li, X.-G. Fu, L. Cao and Z.-D. Hu

Abstract: All the non-hydrogen atoms of the title compound, C₆H₈N₄O₂, are almost coplanar, except for the -NH-NH₂ moiety of the carbazoyl group, forming a conjugated system. There are - interactions between neighboring parallel aromatic rings, and intermolecular N-HN and N-HO hydrogen bonds lead to a three-dimensional framework.

Online 9 April 2003

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