Okuda Kensuke, Hirota Takashi, Nishina Yuta, Ishida Hiroyuki
Acta Crystallogr Sect E Struct Rep Online. 2012 Sep 1;68(Pt 9):o2819. doi: 10.1107/S1600536812036835. Epub 2012 Aug 31.
The asymmetric unit of the title compound, C(13)H(9)NO(3), consists of two crystallographically independent mol-ecules. In each mol-ecule, the tetra-hydro-furan (THF) ring adopts an envelope conformation with one of the methyl-ene C atoms positioned at the flap. The dihedral angles between the mean plane of the THF and the benzofuran ring system are 70.85 (5) and 89.59 (6)°. In the crystal, mol-ecules are stacked in a column along the a-axis direction through C-H⋯O hydrogen bonds, with columns further linked by C-H⋯N and C-H⋯O inter-actions.
标题化合物C(13)H(9)NO(3)的不对称单元由两个晶体学独立的分子组成。在每个分子中，四氢呋喃（THF）环呈信封构象，其中一个亚甲基C原子位于瓣处。THF的平均平面与苯并呋喃环系统之间的二面角分别为70.85 (5)°和89.59 (6)°。在晶体中，分子通过C-H⋯O氢键沿a轴方向堆积成列，各列通过C-H⋯N和C-H⋯O相互作用进一步相连。
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