Ono Katsuhiko, Tokura Osamu, Tomura Masaaki
Acta Crystallogr Sect E Struct Rep Online. 2009 Aug 8;65(Pt 9):o2118. doi: 10.1107/S1600536809030888.
The title compound, C(18)H(10)O(4), has been isolated as an impurity in commercially available 6,11-dihydr-oxy-5,12-naphth-acenedione. The title compound exhibits yellow fluorescence in the solid state. The mol-ecule has crystallographic inversion symmetry and is planar, with an r.m.s. deviation of 0.031 (1) Å. The crystal structure is stabilized by C-H⋯O hydrogen bonds and π-π stacking inter-actions between 3-methyl-eneisobenzofuran-1(3H)-one units [inter-planar distance 3.43 (1) Å].
标题化合物C(18)H(10)O(4)是在市售的6,11-二羟基-5,12-萘二酮中作为杂质分离得到的。该标题化合物在固态时呈现黄色荧光。分子具有晶体学倒转对称性且呈平面状,均方根偏差为0.031 (1) Å。晶体结构通过C-H⋯O氢键和3-亚甲基异苯并呋喃-1(3H)-酮单元之间的π-π堆积相互作用得以稳定[平面间距离为3.43 (1) Å]。