In general, oximes and their derivations are very important compounds in the chemical industry and medicine due to their biological activity. Oximes have various insecticidal, miticidal and nematocidal activities and are employed as antidotes against organophosphorus poisons. 1 Carbonyl-oximes are employed in the separation and spectrophotometric determination of Ni, Pd, Co, Fe and Cu metals. 2,3 Oxime groups posses stronger hydrogen-bonding capabilities than alcohols, phenols and carboxylic

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... ds. 4 In this paper we report on the crystal structure of the title compound, shown in Fig. 1 . The spectrum of H-NMR was recorded with a spectrometer 60-MHz VARIAN (EM-360). Wchloroisonitrosoacetophenone (2.75 g, 0.015 mol) was solved in 40 ml of dichloromethane; then a solution of (4.86 g, 0.03 mol) 4-methylaniline in 20 ml dichloromethane was added dropwise into this mixture. The precipitated product was filtered off. The filtered mixture was kept under room-temperature conditions for 3 days. Finally, the formed single crystals was filtered off and washed with ethanol. Reflection data were collected on a Rigaku AFC7S diffractometer using Mo Kα monochromated with graphite at 20.0˚C, as summarized in Table 1 , and corrected for Lorentz and polarization effects. The structure was solved by a direct method (SIR 92), 5 and refined by full-matrix least-squares with anisotropic thermal parameters for the non-hydrogen atoms. In a later stage of the refinement, reflection data were corrected for