Abstract
The title compound, C27H14F10S2, is a new symmetrical photochromic diarylethene derivative which can be used potentially for optical recording media and other optoelectronic device materials. There are two independent molecules in the asymmetric unit. Both adopt a photoactive antiparallel conformation. The distances between the reactive C atoms in the two molecules are 3.664 (7) and 3.621 (7) Å. For one molecule, the dihedral angles between the central cyclopentene ring and the thiophene rings are 46.4 (9) and 51.9 (9)°, and those between the thiophene rings and the adjacent benzene rings are 2.1 (8) and 18.9 (8)°. For the other molecule, the dihedral angles between the central cyclopentene ring and the thiophene rings are 134.5 (9) and 44.3 (9)°, and those between the thiophene rings and the adjacent benzene rings are 2.7 (8) and 27.7 (8)°.
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