Sridharan Makuteswaran, Rajendra Prasad Karnam J, Zeller Matthias
Acta Crystallogr Sect E Struct Rep Online. 2009 Apr 18;65(Pt 5):o1064. doi: 10.1107/S1600536809013737.
The title compound, C(26)H(19)ClN(2), is a 5,6-dihydro-13H-indolo[3,2-c]acridine prepared by condensation of a 2,3,4,9-tetra-hydro-1H-carbazol-1-one with 2-amino-benzophenone. The crystals undergo a destructive phase change upon cooling at varying temperatures between 270 and 200 K, depending on cooling rate and disturbance by vibration, thus indicating supercooling of the metastable room-temperature structure at lower temperature. The overall planarity of the indolo[3,2-c]acridine part of the mol-ecule is inter-rupted by the saturated ethyl-ene group, and the planes of the two halves exhibit a dihedral angle of 22.05 (6)° with each other while themselves being essentially planar. Packing is dominated by C-H⋯π inter-actions. No classical hydrogen bonds or stacking inter-actions are observed.
标题化合物C(26)H(19)ClN(2)是一种5,6-二氢-13H-吲哚并[3,2-c]吖啶，它通过2,3,4,9-四氢-1H-咔唑-1-酮与2-氨基二苯甲酮缩合制备而成。根据冷却速率和振动干扰情况，晶体在270至200 K之间的不同温度下冷却时会发生破坏性相变，这表明在较低温度下亚稳态室温结构出现了过冷现象。分子中吲哚并[3,2-c]吖啶部分的整体平面性被饱和乙烯基打断，两半部分的平面彼此之间呈现出22.05 (6)°的二面角，而它们自身基本是平面的。堆积作用主要由C-H⋯π相互作用主导。未观察到经典氢键或堆积相互作用。
