Dong Wen-Kui, He Xue-Ni, Guan Yong-Hong, Xu Li, Ren Zong-Li
School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou 730070, People's Republic of China.
Acta Crystallogr Sect E Struct Rep Online. 2008 Aug 23;64(Pt 9):o1810. doi: 10.1107/S1600536808026731.
The mol-ecule of the title compound, C(17)H(18)N(2)O(6), adopts a V-shaped conformation, the dihedral angle between the two halves of the mol-ecule being 81.31 (4) °. There is one half-mol-ecule in the asymmetric unit, with a crystallographic twofold rotation axis passing through the central C atom. There are strong intra-molecular O-H⋯N and O-H⋯O hydrogen bonds involving the hydr-oxy group and adjacent O and N atoms. In the crystal structure, inter-molecular O-H⋯O hydrogen bonds link the mol-ecules, forming an infinite three-dimensional supra-molecular structure.
标题化合物C(17)H(18)N(2)O(6)的分子呈V形构象，分子两半部分之间的二面角为81.31 (4)°。不对称单元中有半个分子，有一个晶体学二重旋转轴穿过中心C原子。存在涉及羟基与相邻O和N原子的强分子内O-H⋯N和O-H⋯O氢键。在晶体结构中，分子间O-H⋯O氢键连接分子，形成无限的三维超分子结构。
