title: 3,8-Dimethyl-acenaphthyl-ene-1,2-dione.
abstract: In the title compound, C(14)H(10)O(2), the acenaphthene-quinone core is essentially planar, with an r.m.s. deviation of 0.0140 Å. In the crystal, mol-ecules are connected by π-π stacking inter-actions [centroid-centroid distances = 3.766 (3), 3.839 (3) and 3.857 (3) Å], forming columns parallel to the a axis.
authors.affiliation: School of Chemistry and Chemical Engineering, Yangtze Normal University, Fuling 408100, Chongqing,  People's Republic of China.
authors.forename: Shu-Hua
authors.initials: SH
authors.lastname: He
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