Acta Cryst. (2011). E67, o2661  [ doi:10.1107/S1600536811037159 ]

(E)-2-[4-(2-Chlorophenyl)but-3-en-2-ylidene]malononitrile

T.-R. Kang

Abstract: There are two independent but virtually identical molecules in the asymmetric unit of the title compound, C₁₃H₁₉ClN₂. Each molecular skeleton displays an approximately planar structure except for the methyl group [the r.m.s. deviations for all 16 non-H atoms are 0.039 (molecule 1) and 0.056 Å (molecule 2)]. An E configuration is found about each of the C=C bonds. The crystal packing is stabilized by C-HN interactions that connect the independent molecules into supramolecular chains along the c-axis direction.

Online 17 September 2011

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