Win Yip-Foo, Choong Chen-Shang, Teoh Siang-Guan, Quah Ching Kheng, Fun Hoong-Kun
Acta Crystallogr Sect E Struct Rep Online. 2012 Feb 1;68(Pt 2):o488. doi: 10.1107/S1600536812002036. Epub 2012 Jan 21.
The title compound, C(7)H(6)N(2)O(4), is approximately planar (r.m.s. deviation = 0.026 Å for the 13 non-H atoms). The mol-ecular structure is stabilized by intra-molecular N-H⋯O hydrogen bonds, which generate S(6) ring motifs. In the crystal, mol-ecules are linked via inter-molecular N-H⋯O, O-H⋯O and C-H⋯O hydrogen bonds into a three-dimensional network.
标题化合物C(7)H(6)N(2)O(4)近似呈平面结构（13个非氢原子的均方根偏差为0.026 Å）。分子结构通过分子内N-H⋯O氢键得以稳定，这些氢键形成了S(6)环模式。在晶体中，分子通过分子间N-H⋯O、O-H⋯O和C-H⋯O氢键连接成三维网络。
