Abstract
The title indan-1-one derivative, C
18
H
14
O, is planar with an r.m.s. deviation for all 19 non-H atoms of 0.098 Å. The conformation about each of the C=C bonds [1.343 (3) and 1.349 (3) Å] is
E
. Supramolecular layers in the
bc
plane, mediated by C—H⋯O and π–π [ring centroid–centroid distance = 3.5282 (15) Å] interactions, feature in the crystal packing.