title: 1,3-Ninhydrin dihydrazone featuring an R4(4)(12) motif with 4 symmetry and comprising only N and H atoms.
abstract: In the title compound [systematic name: (1Z,3Z)-1,3-dihydrazinylidene-1H-inden-2(3H)-one], C(9)H(8)N(4)O, isolated molecules possess approximate noncrystallographic C(2v) symmetry and their cis conformation and planarity are assisted by a pair of short intramolecular N-H···O hydrogen bonds. Each molecule is asymmetrically involved in an extensive three-dimensional network of N-H···O and N-H···N hydrogen bonds, and the structure also exhibits weaker π-π and C=O···C interactions. The structure features an R(4)(4)(12) motif consisting solely of N and H atoms and possessing crystallographic 4 symmetry.
authors.affiliation: School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, England.
authors.forename: Alexander J
authors.initials: AJ
authors.lastname: Blake
authors.forename: Yonas
authors.initials: Y
authors.lastname: Chebude
authors.forename: Haregewine
authors.initials: H
authors.lastname: Tadesse
authors.forename: Berhanu
authors.initials: B
authors.lastname: Wondimu
mesh_terms: D018360:Crystallography, X-Ray; D006859:Hydrogen / Q000737:chemistry*; D006860:Hydrogen Bonding; D008968:Molecular Conformation; D015394:Molecular Structure; D009555:Ninhydrin / Q000031:analogs & derivatives* / Q000737:chemistry*; D009584:Nitrogen / Q000737:chemistry*; D013237:Stereoisomerism
chemical_list: D006859:Hydrogen; D009555:Ninhydrin; D009584:Nitrogen