Acta Crystallographica Section E

Structure Reports Online

Volume 69, Part 5 (May 2013)


organic compounds



fk2070 scheme

Acta Cryst. (2013). E69, o765-o766    [ doi:10.1107/S1600536813009628 ]

A second monoclinic polymorph of 2-(3,5-dimethyl-1H-pyrazol-1-yl)-2-hydroxyimino-N'-[1-(pyridin-2-yl)ethylidene]acetohydrazide

M. O. Plutenko, R. D. Lampeka, M. Haukka and E. Nordlander

Abstract: The title compound, C14H16N6O2, is a second monoclinic polymorph of 2-[1-(3,5-dimethyl)pyrazolyl]-2-hydroxyimino-N'-[1-(2-pyridyl)ethylidene] acetohydrazide, with two crystallographically independent molecules per asymmetric unit. The non-planar molecules are chemically equal having similar geometric parameters. The previously reported polymorph [Plutenko et al. (2012). Acta Cryst. E68, o3281] was described in space group Cc (Z = 4). The oxime group and the O atom of the amide group are anti with respect to the C-C bond. In the crystal, molecules are connected by N-H...N hydrogen bonds into zigzag chains extending along the b axis.


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