5-n-Butyl-4-2-(2-ethyl-1-benzothio­phen-3-yl)-334455-hexa­fluoro­cyclo­pent-1-en-1-ylthio­phene-2-carbaldehyde

摘要

The title compound, C24H20F6OS2, exhibiting photochromic behaviour, has thienyl and benzothienyl substituents attached to the double-bond C atoms of the envelope-shaped cyclo­pentene ring. The mean planes of aromatic systems form dihedral angles of 43.0 (1) (thien­yl) and 73.8 (1)° (benzothien­yl) with the mean plane of the C—C=C—C portion of the cyclo­pentene ring. This conformation avoids steric hindrance between the n-butyl and ethyl substituents. The formyl substituent of the thienyl group, as well as the ethyl substituent of the benzothienyl group, are disordered [occupancies of 0.788 (17):0.212 (17) and 0.64 (5):0.36 (5), respectively].