1-[5-(4-Chlorophenyl)-2-methyl-3-thienyl]-2-(2,5-dimethyl-3-thienyl)-3,3,4,4,5,5-hexafluorocyclopent-1-ene: a new photochromic diarylethene compound

Abstract

The title compound, C22H15ClF6S2, is a new unsymmetrical photochromic diaryl­ethene with a para‐chloro­phenyl substituent. It is a promising candidate for an optical recording medium and other optoelectronic device materials. The distance between the two reactive C atoms is 3.612 (6) Å; the dihedral angles between the cyclo­pentene ring and the thio­phene rings are 40.9 (5) and 41.2 (5)°, and that between one thio­phene ring and the adjacent benzene ring is 27.8 (4)°.

2-[5-(3-Cyanophenyl)-2-methyl-3-thienyl]-1-(2,5-dimethyl-3-thienyl)-3,3,4,4,5,5-hexafluorocyclopent-1-ene: a new photochromic diarylethene compound

“…The design and synthesis of new photochromic diarylethene compounds is an area of intense research because of their widespread potential application as optical memories and photoswitches (Pu, Li et al, 2006;Pu, Yang et al, 2006;Pu, Zheng et al, 2006) and their good thermal stability and fatigue resistance (Irie, 2000;Tian & Yang, 2004;Morimoto et al, 2006). For further background information, see Pu, Yang et al (2005).…”