title: N'-[(E)-4-Bromo-benzyl-idene]pyrazine-2-carbohydrazide.
abstract: In the title compound, C12H9BrN4O, the N'-methyl-idene-pyrazine-2-carbohydrazide and 4-bromobenzene groups are oriented at a dihedral angle of 10.57 (7)°. The hydrazide N-H group is involved in intra-molecular N-H⋯N inter-action, which generates an S(5) motif. A short C-H⋯O inter-action is formed between the methyl-idene H atom and the carbonyl O atom. It connects mol-ecules into chains extending along [100]. In addition, mol-ecules are arranged into stacks extending along [010] via π-π inter-actions between pyrazine and benzene rings, with centroid-centroid distances of 3.837 (2) and 3.860 (2) Å.
authors.affiliation: Department of Chemistry, Quaid-i-Azam University, Islamabad, Pakistan.
authors.forename: Shahid
authors.initials: S
authors.lastname: Hameed
authors.forename: Mushtaq
authors.initials: M
authors.lastname: Ahmad
authors.forename: M Nawaz
authors.initials: MN
authors.lastname: Tahir
authors.forename: Muhammad Abdullah
authors.initials: MA
authors.lastname: Shah
authors.forename: Hazoor Ahmad
authors.initials: HA
authors.lastname: Shad
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