Acta Cryst. (2009). E65, o772-o773  [ doi:10.1107/S1600536809008939 ]

Pyrazino[2,3-b]indolizine-10-carbonitrile

A. Stefanska, D. Zarzeczanska, T. Ossowski and A. Sikorski

Abstract: In the crystal structure of the title compound, C₁₁H₆N₄, neighbouring molecules are linked into inversion dimers through pairs of weak C-HN hydrogen bonds, forming an R₂²(10) ring motif. The dimers forming this motif are further linked by - interactions. With respective average deviations from planarity of 0.004 (2) and 0.004 (1) Å, the pyrazino[2,3-]indolizine and cyano fragment are oriented at 0.8 (1)° to each other. The mean planes of the pyrazino[2,3-b]indolizine skeleton either lie parallel or are inclined at an angle of 28.7 (2)° in the crystal.

Online 14 March 2009

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