1.
Acta Crystallogr Sect E Struct Rep Online
; 65(Pt 9): o2118, 2009 Aug 08.
Artigo
em Inglês
| MEDLINE
| ID: mdl-21577533
RESUMO
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 0.031â (1)â Å. The crystal structure is stabilized by C-Hâ¯O hydrogen bonds and π-π stacking inter-actions between 3-methyl-eneisobenzofuran-1(3H)-one units [inter-planar distance 3.43â (1)â Å].