2-[5-Methyl-2-(propan-2-yl)phenoxy]-N′-{2-[5-methyl-2-(propan-2-yl)phenoxy]acetyl}acetohydrazide

The complete molecule of the title compound, C24H32N2O4, is generated by a crystallographic inversion center. The 1,2-diethylhydrazine moiety is nearly planar, with a maximum deviation of 0.024 (1) Å, and is inclined at a dihedral angle of 54.20 (4)° with the phenyl ring. In the crystal, [001] chains are formed, with adjacent molecules in the chain linked by pair of intermolecular N—H⋯O hydrogen bonds, generating R 2 2(10) ring motifs. Intermolecular C—H⋯O hydrogen bonds and C—H⋯π interactions are also observed.

The complete molecule of the title compound, C 24 H 32 N 2 O 4 , is generated by a crystallographic inversion center. The 1,2diethylhydrazine moiety is nearly planar, with a maximum deviation of 0.024 (1) Å , and is inclined at a dihedral angle of 54.20 (4) with the phenyl ring. In the crystal, [001] chains are formed, with adjacent molecules in the chain linked by pair of intermolecular N-HÁ Á ÁO hydrogen bonds, generating R 2 2 (10) ring motifs. Intermolecular C-HÁ Á ÁO hydrogen bonds and C-HÁ Á Á interactions are also observed.
In the crystal packing, the molecules are linked via a pair of intermolecular N1-H1N1···O2 hydrogen bonds (Table 1), generating R 2 2 (10) ring motifs (Bernstein et al., 1995). The molecules are further linked into one-dimensional chains along [001] via adjacent ring motifs and intermolecular C11-H11A···O2 hydrogen bonds (Table 1). The crystal structure is further stabilized by C7-H7B···Cg1 (Table 1)   U eq (C). A rotating-group model was applied for the methyl group. Fig. 1. The molecular structure of the title compound showing 50% probability displacement ellipsoids for non-H atoms.

Special details
Experimental. The crystal was placed in the cold stream of an Oxford Cryosystems Cobra open-flow nitrogen cryostat (Cosier & Glazer, 1986) operating at 100.0 (1) K.
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 > 2sigma(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.