title: 1,2-Bis[5-(4-cyano-phen-yl)-2-methyl-3-thien-yl]-3,3,4,4,5,5-hexa-fluoro-cyclo-pent-1-ene: a photochromic diaryl-ethene compound.
abstract: The mol-ecules of the title compound, C(29)H(16)F(6)N(2)S(2), a photochromic dithienylethene with 4-cyano-phenyl substituents, adopt an anti-parallel arrangement that is reponsible for photoactivity. The mol-ecule lies on a twofold rotation axis. The dihedral angle between the nearly planar cyclo-pentenyl and heteroaryl rings is 142.5 (3)°, and that between the heteroaryl and benzene rings is 22.4 (3)°. The distance between the heteroaryl rings of adjacent mol-ecules is 3.601 (2) Å, indicating a π-π interaction.
authors.affiliation: Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science & Technology Normal University, Nanchang 330013, People's Republic of China.
authors.forename: Gang
authors.initials: G
authors.lastname: Liu
authors.forename: Qidong
authors.initials: Q
authors.lastname: Tu
authors.forename: Qing
authors.initials: Q
authors.lastname: Zhang
authors.forename: Congbin
authors.initials: C
authors.lastname: Fan
authors.forename: Tianshe
authors.initials: T
authors.lastname: Yang