Chen Jiang, Jin Zhe-Peng, Gao Bing-Fei, Yu Jian-Hua, Wu Jie-Ying
Department of Chemistry, Bengbu Medical College, Bengbu 233030, People's Republic of China.
Department of Chemistry, Anhui University, Hefei 230039, People's Republic of China ; Key Laboratory of Functional Inorganic Materials, Chemistry, Hefei 230039, People's Republic of China.
Acta Crystallogr Sect E Struct Rep Online. 2014 Feb 15;70(Pt 3):o314. doi: 10.1107/S1600536814003195. eCollection 2014 Mar 1.
The asymmetric unit of the title Schiff base molecule, C25H20N2O, contains two independent mol-ecules. In each mol-ecule, the C=N bond is in an E conformation. The most significant difference between the two mol-ecules is seen for the dihedral angles between the meth-oxy-substituted benzene ring and the two phenyl rings, which are 85.5 (1) and 82.3 (1)° in the first mol-ecule, and 49.0 (1) and 40.4 (1)° in the second. This conformational difference is reflected in the central C=N-C C torsion angle, which is 28.7 (2)° in the first mol-ecule and -29.8 (3)° in the other. In each mol-ecule, there is an intra-molecular O-H⋯N hydrogen bond.
标题席夫碱分子C25H20N2O的不对称单元包含两个独立分子。在每个分子中，C=N键呈E构象。两个分子之间最显著的差异体现在甲氧基取代苯环与两个苯环之间的二面角上，在第一个分子中为85.5 (1)°和82.3 (1)°，在第二个分子中为49.0 (1)°和40.4 (1)°。这种构象差异反映在中心C=N-C C扭转角上，第一个分子中为28.7 (2)°，另一个分子中为-29.8 (3)°。在每个分子中，存在分子内O-H⋯N氢键。
