Shahverdizadeh Gholam Hossein, Tiekink Edward R T
Acta Crystallogr Sect E Struct Rep Online. 2011 Apr 1;67(Pt 4):o798. doi: 10.1107/S1600536811007847. Epub 2011 Mar 5.
The mol-ecular structure of the title Schiff base compound, C(26)H(20)N(2)O(3), shows that respective methyl-idene residues are almost coplanar with the adjacent terminal benzene ring owing to the presence of intra-molecular O-H⋯N hydrogen bonds [the N-C-C-C torsion angles are -6.6 (7) and -6.7 (7)°]. However, twists are exhibited about each methyl-idene and respective benzene ring connected to the central O atom; the dihedral angles formed between the two inner and two outer benzene rings are 54.6 (2) and 45.6 (3)°, respectively. The conformation about each of the C=N bonds [1.285 (5) and 1.295 (5) Å] is E. In the crystal, extensive C-H⋯π contacts involving all benzene rings results in the formation of layers in the ac plane.
标题席夫碱化合物C(26)H(20)N(2)O(3)的分子结构表明，由于分子内O-H⋯N氢键的存在，各自的亚甲基残基几乎与相邻的末端苯环共面[N-C-C-C扭转角为-6.6 (7)和-6.7 (7)°]。然而，围绕每个亚甲基以及与中心O原子相连的各自苯环存在扭曲；两个内苯环和两个外苯环之间形成的二面角分别为54.6 (2)和45.6 (3)°。每个C=N键[1.285 (5)和1.295 (5) Å]的构象为E型。在晶体中，涉及所有苯环的广泛C-H⋯π接触导致在ac平面上形成层状结构。
