Sang Ya-Li, Lin Xue-Song
Department of Chemistry, Chifeng University, Chifeng 024001, People's Republic of China.
Acta Crystallogr Sect E Struct Rep Online. 2009 Jun 20;65(Pt 7):o1631-2. doi: 10.1107/S160053680902282X.
In the asymmetric unit of the title hydrazone compound, C(15)H(10)Br(2)N(2)O(4), there are two independent mol-ecules. In each mol-ecule, the five-membered ring adopts a flattened envelope conformation; the flap atoms are displaced by 0.114 (2) and 0.219 (2) Å from the planes of the other four atoms. In one mol-ecule the dihedral angle between the two benzene rings is 22.8 (2)°, while in the other it is 40.8 (2)°. Each mol-ecule displays an E configuration with respect to the C=N bond. In both mol-ecules, intra-molecular O-H⋯N hydrogen bonds are observed. In the crystal structure, mol-ecules are linked through inter-molecular N-H⋯O hydrogen bonds, forming chains along the a axis.
在标题腙化合物C(15)H(10)Br(2)N(2)O(4)的不对称单元中，有两个独立的分子。在每个分子中，五元环呈扁平信封构象；瓣原子相对于其他四个原子的平面位移了0.114 (2) Å和0.219 (2) Å。在一个分子中，两个苯环之间的二面角为22.8 (2)°，而在另一个分子中为40.8 (2)°。每个分子相对于C=N键呈现E构型。在两个分子中，均观察到分子内O-H⋯N氢键。在晶体结构中，分子通过分子间N-H⋯O氢键相连，沿a轴形成链状结构。
