title: N-(4-Bromo-phen-yl)pyrazine-2-carbox-amide.
abstract: The mol-ecule of the title compound, C(11)H(8)BrN(3)O, is close to planar (r.m.s. deviation of all 16 non-H atoms = 0.103 Å), a conformation stabilized by an intra-molecular N-H⋯N hydrogen bond, which generates an S(5) ring. In the crystal structure, supra-molecular chains mediated by C-H⋯O contacts (along a) are linked into a double layer via N⋯Br halogen bonds [3.207 (5) Å] and C-Br⋯π inter-actions [Br⋯ring centroid(pyrazine) = 3.446 (3) Å]. The layers stack along the b axis via weak π-π inter-actions [ring centroid(pyrazine)⋯ring centroid(benzene) distance = 3.803 (4) Å].
authors: Marcelle
authors: M
authors: de Lima Ferreira
authors: Marcus V N
authors: MV
authors: de Souza
authors: Solange M S V
authors: SM
authors: Wardell
authors: James L
authors: JL
authors: Wardell
authors: Edward R T
authors: ER
authors: Tiekink
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