2-(4-Methylphenyl)acetohydrazide

In the title compound, C9H12N2O, the dihedral angle between the benzene ring and the mean plane of the acetohydrazide group is 88.2 (7)°. In the crystal, N—H⋯O hydrogen bonds and weak C—H⋯O interactions link the molecules into infinite ribbons along [001].

In the title compound, C 9 H 12 N 2 O, the dihedral angle between the benzene ring and the mean plane of the acetohydrazide group is 88.2 (7) . In the crystal, N-HÁ Á ÁO hydrogen bonds and weak C-HÁ Á ÁO interactions link the molecules into infinite ribbons along [001].
ASP thanks the UOM for research facilities. JPJ acknowledges the NSF-MRI program (grant No. CHE1039027) for funds to purchase the X-ray diffractometer.

Experimental
To a solution of methyl (4-methylphenyl)acetate (2 g, 12.18 mmol) in methanol (20 mL), hydrazine hydrate (2 mL) was added and the reaction mixture was stirred at room temperature for 6 hours (Fig. 3). After the completion of the reaction methanol was removed under vacuum, added water, precipitated solid was filtered and dried. The single crystal was grown from mixture methanol: water (2:1) by slow evaporation method and yield of the compound was 91%. (m.p.:
Isotropic displacement parameters for these atoms were set to 1.19-1.21 (CH, CH 2 ), 1.49 (CH 3 ) or 1.20 (NH) times U eq of the parent atom.

Computing details
Data collection: CrysAlis PRO (Agilent, 2012); cell refinement: CrysAlis PRO (Agilent, 2012); data reduction: CrysAlis RED (Agilent, 2012); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008    Special details Geometry. All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds involving l.s. planes. Refinement. Refinement of F 2 against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F 2 , conventional R-factors R are based on F, with F set to zero for negative F 2 . The threshold expression of F 2 > σ(F 2 ) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F 2 are statistically about twice as large as those based on F, and R-factors based on ALL data will be even larger.