Nayak Prakash S, Narayana B, Jasinski Jerry P, Yathirajan H S, Sarojini B K
Department of Studies in Chemistry, Mangalore University, Mangalagangotri 574 199, India.
Acta Crystallogr Sect E Struct Rep Online. 2013 May 15;69(Pt 6):o891. doi: 10.1107/S1600536813012531. Print 2013 Jun 1.
In the title compound, C12H10BrN3O, the dihedral angle between the mean planes of the 4-bromo-phenyl and pyrazin-2-yl rings is 54.6 (3)°. An intra-molecular C-H⋯O hydrogen bond generates an S(6) graph-set motif. In the crystal, weak N-H⋯N hydrogen bonds link the mol-ecules into chains along [100]. The chains are linked via C-H⋯N and C-H⋯O hydrogen bonds, forming two-dimensional networks lying parallel to the ab plane.
在标题化合物C₁₂H₁₀BrN₃O中，4-溴苯基和吡嗪-2-基环的平均平面之间的二面角为54.6 (3)°。分子内的C-H⋯O氢键形成一个S(6)图集 motif。在晶体中，弱的N-H⋯N氢键将分子沿[100]方向连接成链。这些链通过C-H⋯N和C-H⋯O氢键相连，形成平行于ab平面的二维网络。
