Sun Jingya, Tong Xiangdi
College of Marine Sciences, Zhejiang Ocean University, Zhoushan 316000, People's Republic of China.
Acta Crystallogr Sect E Struct Rep Online. 2011 Jan 15;67(Pt 2):o409. doi: 10.1107/S1600536811001644.
The title compound, C(13)H(9)N(3)O(3), was prepared by the reaction of 5-nitro-salicyl-aldehyde with 1,2-diamino-benzene in methanol. The whole mol-ecule is approximately planar, with a mean deviation from the plane defined by the non-H atoms of 0.0311 (4) Å, and with a dihedral angle between the benzene ring and the benzimidazole ring system of 1.1 (3)°. An intra-molecular O-H⋯N hydrogen bond occurs. In the crystal, adjacent mol-ecules are linked through inter-molecular N-H⋯O hydrogen bonds, forming centrosymmetric dimers.
标题化合物C(13)H(9)N(3)O(3)是由5-硝基水杨醛与1,2-二氨基苯在甲醇中反应制备的。整个分子近似平面状，非氢原子所定义平面的平均偏差为0.0311 (4) Å，苯环与苯并咪唑环系统之间的二面角为1.1 (3)°。分子内存在O-H⋯N氢键。在晶体中，相邻分子通过分子间N-H⋯O氢键相连，形成中心对称二聚体。
