Acta Cryst. (2009). E65, o295  [ doi:10.1107/S160053680900110X ]

(E)-N'-(4-Pyridylmethylene)-4-(8-quinolyloxy)butanohydrazide 0.25-hydrate

M.-E. Chen and J.-M. Li

Abstract: The asymmetric unit of the title compound, C₁₉H₁₈N₄O₂·0.25H₂O, contains two organic molecules and a solvent water molecule with 50% occupancy. The two molecules differ in their conformations: in one molecule it is (+)gauche-trans-trans-(+)gauche-trans, whereas in the other it is (-)gauche-trans-trans-(-)gauche-trans. The dihedral angles between the pyridine ring and the quinoline ring system are 67.4 (3) and 68.0 (2)°. Molecules are linked into a supramolecular two-dimensional array via N-HN hydrogen bonds, with each partially occupied water molecule connected via an O-HO hydrogen bond. C-HO interactions are also present.

Online 14 January 2009

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