Han Guo-Zhi, Han Lu-Na, Lu Ran-Zhe, Zhang Min, Wang Hai-Bo
College of Science, Nanjing University of Technology, Xinmofan Road No. 5 Nanjing, Nanjing 210009, People's Republic of China.
Acta Crystallogr Sect E Struct Rep Online. 2008 Nov 29;64(Pt 12):o2468. doi: 10.1107/S1600536808039354.
The asymmetric unit of the title compound, C(8)H(6)N(2)O(2), contains two independent mol-ecules, the aromatic rings of which are oriented at a dihedral angle of 1.68 (3)°. Intra-molecular C-H⋯O hydrogen bonds result in the formation of two non-planar six-membered rings, which adopt envelope and twisted conformations. In the crystal structure, inter-molecular C-H⋯O hydrogen bonds link the mol-ecules. There are π-π contacts between the benzene rings [centroid-centroid distances = 3.752 (3) and 3.874 (3) Å].
标题化合物C(8)H(6)N(2)O(2)的不对称单元包含两个独立分子,其芳环以1.68 (3)°的二面角取向。分子内C-H⋯O氢键导致形成两个非平面六元环,它们呈信封式和扭曲构象。在晶体结构中,分子间C-H⋯O氢键连接这些分子。苯环之间存在π-π接触[质心-质心距离 = 3.752 (3) 和3.874 (3) Å]。