2946 reflections 191 parameters 4 restraints Table 1 Hydrogen-bond geometry (A ˚ ,). 10537 measured reflections 2946 independent reflections 1251 reflections with I>2 (I) Rint = 0.106 H atoms treated by a mixture of independent and constrained refinement max = 0.27 e A ˚ 3 min = 0.27 e A ˚ 3 Key indicators: single-crystal X-ray study; T = 298 K; mean (C–C) = 0.007 A˚; R factor = 0.069; wR factor = 0.215; data-to-parameter ratio = 15.4. The asymmetric unit of the title compound, C14H11ClN2O2-H2O, contains a Schiff base molecule and a water molecule of crystallization. The dihedral angle between the two aromatic rings is 27.3 (4). In the crystal structure, molecules are linked into a two-dimensional network parallel to the bc plane by intermolecular O—H O and N—H O hydrogen bonds involving the water molecules. Related literature For general background on Schiff bases derived from condensation of aldehydes with benzohydrazides, see: Fun e
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