1,1'-（乙烷-1,2-二基）双-（吲哚啉-2,3-二酮）
1,1'-(Ethane-1,2-di-yl)bis-(indoline-2,3-dione).
作者信息
Wang Yao, Cao Sheng-Li, Wan Chong-Qing, Yuan Jing-Li
机构信息
Department of Chemistry, Capital Normal University, Beijing 100048, People's Republic of China.
出版信息
Acta Crystallogr Sect E Struct Rep Online. 2010 Jun 5;66(Pt 7):o1569-70. doi: 10.1107/S1600536810018957.
The mol-ecule of the title compound, C(18)H(12)N(2)O(4), is situated on a crystallographic centre of symmetry. The mol-ecule has a zigzag structure, with two parallel symmetry-related indoline-2,3-dione fragments linked by an ethyl-ene group at each N atom. In the crystal, the mol-ecules stack in columns along the b axis. There are two such columns in the structure. The mol-ecules within each column are parallel; however, the mol-ecules in the two columns differ in the respective orientation of the indoline-2,3-dione fragments. In one column, they are approximately parallel to (112), while in the other they are approximately parallel to (12). The inter-planar angle between the indoline-2,3-dione fragments in the two columns is 80.83 (3)°. The mol-ecules within each column are related by mutual displacement of their centres of symmetry, that is (0, ±1/2, ±1/2). The packing between the mol-ecules is provided by weak inter-actions only, viz. C-H⋯O hydrogen bonds and π-π [centroid-centroid distance = 3.8745 (8) Å] and C=O⋯π inter-actions.
标题化合物C(18)H(12)N(2)O(4)的分子位于晶体学对称中心上。该分子具有锯齿形结构，两个平行的对称相关吲哚啉-2,3-二酮片段通过每个N原子处的乙烯基相连。在晶体中，分子沿b轴堆积成列。结构中有两列这样的分子。每列中的分子相互平行；然而，两列中的分子在吲哚啉-2,3-二酮片段的各自取向上有所不同。在一列中，它们大致平行于(112)，而在另一列中它们大致平行于(12)。两列中吲哚啉-2,3-二酮片段之间的面间角为80.83 (3)°。每列中的分子通过其对称中心的相互位移相关联，即(0, ±1/2, ±1/2)。分子间堆积仅由弱相互作用提供，即C-H⋯O氢键以及π-π [质心-质心距离 = 3.8745 (8) Å]和C=O⋯π相互作用。
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