| Summary: | In the title compound, C9H5N3, the quinoxaline ring is essentially planar, with a maximum deviation of 0.012 (1) Å. Short intermolecular distances between the centroids of the 2,3-dihydropyrazine and benzene rings [3.6490 (5) Å] indicate the existence of π...π interactions. In the crystal packing, the molecules are linked via two pairs of intermolecular C—H...N interactions, forming R22 (8) and R22 (10) ring motifs; these molecules are further linked into a two-dimensional network parallel to (1 0 2) via another C–H...N interaction.
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