5,5'-二甲氧基-2,2'-[2,2-二甲基丙烷-1,3-二亚基双(次氮基亚甲基)]二苯酚
5,5'-Dimeth-oxy-2,2'-[2,2-dimethyl-propane-1,3-diylbis(nitrilo-methyl-idyne)]diphenol.
作者信息
Yeap Chin Sing, Kargar Hadi, Kia Reza, Fun Hoong-Kun
出版信息
Acta Crystallogr Sect E Struct Rep Online. 2008 Nov 20;64(Pt 12):o2389-90. doi: 10.1107/S1600536808037690.
The asymmetric unit of the title Schiff base compound, C(21)H(26)N(2)O(4), consists of four crystallographically independent mol-ecules, viz. A, B, C and D. The A and D, and the B and C mol-ecules are related by a pseudo-inversion centre, and the remaining pairs of mol-ecules differ in the orientations of one of the meth-oxy groups. In each independent mol-ecule, intra-molecular O-H⋯N hydrogen bonds generate two S(6) ring motifs. The dihedral angles between the benzene rings in mol-ecules A, B, C and D are 65.86 (19), 50.41 (19), 68.59 (19) and 50.85 (19)°, respectively. In the crystal structure, mol-ecules are linked by C-H⋯O hydrogen bonds, forming R(2) (2)(8) dimers. In addition, weak C-H⋯π inter-actions are observed.
标题席夫碱化合物C(21)H(26)N(2)O(4)的不对称单元由四个晶体学独立分子组成，即A、B、C和D。A和D分子，以及B和C分子通过一个假反演中心相关联，其余分子对在其中一个甲氧基的取向上有所不同。在每个独立分子中，分子内O-H⋯N氢键产生两个S(6)环模式。分子A、B、C和D中苯环之间的二面角分别为65.86 (19)、50.41 (19)、68.59 (19)和50.85 (19)°。在晶体结构中，分子通过C-H⋯O氢键相连，形成R(2) (2)(8)二聚体。此外，还观察到弱的C-H⋯π相互作用。
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