Acta Cryst. (2006). E62, o279-o281  [ doi:10.1107/S1600536805041966 ]

3,3,4,4,5,5-Hexafluoro-1,2-bis[2-methyl-5-(3-methylphenyl)-3-thienyl]cyclopent-1-ene, a new photochromic diarylethene compound

S.-Z. Pu, T.-S. Yang, B. Chen and J. Xu

Abstract: The new title symmetric photochromic diarylethene compound, C₂₉H₂₂F₆S₂, which contains a 3-methylphenyl substituent, adopts an antiparallel conformation in the crystal structure. The distance between the two reactive C atoms, i.e. the ring C atoms to which the methyl groups are attached, is 3.559 (8) Å. The dihedral angles between the central cyclopentene ring and the adjacent thiophene rings are 40.8 (7) and 45.1 (5)°, and those between the thiophene rings and the adjacent benzene rings are 3.3 (6) and 25.7 (9)°.

Online 21 December 2005

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