Shakuntala K, Gowda B Thimme, Tokarčík Miroslav, Kožíšek Jozef
Acta Crystallogr Sect E Struct Rep Online. 2009 Nov 18;65(Pt 12):o3119. doi: 10.1107/S1600536809048715.
The asymmetric unit of the title compound, C(10)H(7)Cl(2)NO(3), contains two independent mol-ecules. The mol-ecular conformation of each maleamic unit is stabilized by an intra-molecular O-H⋯O(carbon-yl) hydrogen bond owing to the anti disposition of the participating entities. The mean planes through the benzene ring and the amido group are inclined at angles of 45.7 (1) and 40.8 (1)° in the two mol-ecules. In the crystal, the independent mol-ecules self-associate via N-H⋯O hydrogen bonds into zigzag ribbons propagating along the a axis. The ribbons are weakly coupled by C-H⋯π and C-H⋯O inter-actions.
标题化合物C(10)H(7)Cl(2)NO(3)的不对称单元包含两个独立分子。由于参与实体的反式排列，每个马来酰胺单元的分子构象通过分子内O-H⋯O(羰基)氢键得以稳定。在两个分子中，通过苯环和酰胺基的平均平面倾斜角度分别为45.7 (1)°和40.8 (1)°。在晶体中，独立分子通过N-H⋯O氢键自缔合形成沿a轴延伸的锯齿状链。这些链通过C-H⋯π和C-H⋯O相互作用弱耦合。
