7-Bromo-1,4-bis­(prop-2-yn­yl)pyrido2,3-bpyrazine-2,3(1H,4H)-dione

摘要

In the title compound, C 13 H 8 BrN 3 O 2 , the pyrido-pyrazine fused-ring system is essentially planar (r.m.s. deviation = 0.061 Å). The prop-2-ynyl moieties are twisted away from the ring system in opposite directions. In the crystal, a single weak C—H⋯O inter­action generates 010 chains and aromatic π – π stacking inter­actions between the pyridine rings are observed.