Acta Cryst. (2009). E65, o2157-o2158  [ doi:10.1107/S1600536809031870 ]

n-Butyl 2-(3-chloro-1,2-dihydropyrazin-2-ylidene)-2-cyanoacetate

A. Stefanska, T. Ossowski and L. Ponikiewski

Abstract: The title compound, C₁₁H₁₂ClN₃O₂, is essentially planar except for the n-butoxy group [r.m.s. deviation from the least-squares plane = 0.0131 (1) Å for 11 non-H atoms]. An intramolecular N-HO interaction results in the formation of an S(6) ring. The n-butoxy chain in the molecule is disordered over two sets of sites of equal occupancy.

Online 15 August 2009

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