title: 2-Cyano-N'-(5-hy-droxy-2-nitro-benzyl-idene)acetohydrazide monohydrate.
abstract: The title compound, C(10)H(8)N(4)O(4)·H(2)O, was obtained by the reaction of 5-hy-droxy-2-nitro-benzaldehyde with cyano-acetohydrazide in methanol. The non-H atoms of the hydrazone molecule are approximately coplanar, with a mean deviation from the least-squares plane of 0.056 Å. In the crystal, mol-ecules are linked by N-H⋯O, O-H⋯N and O-H⋯O hydrogen bonds, generating a three-dimensional network.
authors.affiliation: College of Chemistry and Biology Engineering, Yancheng Institute of Technology, Yancheng 224051,  People's Republic of China.
authors.forename: Hongbo
authors.initials: H
authors.lastname: Li
authors.forename: Xiaocheng
authors.initials: X
authors.lastname: Ni
references.citation: Acta Crystallogr Sect E Struct Rep Online. 2011 Apr 1;67(Pt 4):o810
references.pmid: 21754096
references.citation: Acta Crystallogr Sect E Struct Rep Online. 2010 Apr 24;66(Pt 5):o1172
references.pmid: 21579213
references.citation: Acta Crystallogr Sect E Struct Rep Online. 2010 Dec 18;67(Pt 1):o171
references.pmid: 21522678
references.citation: Acta Crystallogr Sect E Struct Rep Online. 2010 Apr 02;66(Pt 5):o1022
references.pmid: 21579086
references.citation: Acta Crystallogr A. 2008 Jan;64(Pt 1):112-22
references.pmid: 18156677