%0 Journal Article
%T 1,2-Bis[5-(2,2กไ-dicyanovinyl)-2-n-pentyl-3-thienyl]-3,3,4,4,5,5-hexafluorocyclopent-1-ene: a new photochromic diarylethene compound
%A Min Li
%A Shou-Zhi Pu
%A Cong-Bin Fan
%A Zhang-Gao Le
%J Acta Crystallographica Section E
%D 2008
%I International Union of Crystallography
%R 10.1107/s160053680800202x
%X The title compound, C31H26F6N4S2, is a new photochromic dithienylethene with dicyanovinyl subsitituents. In the crystal structure, the molecule adopts a photoactive antiparallel conformation, with two n-pentyl groups located on opposite sides of the cyclopentene ring. The cyclopentene ring assumes an envelope conformation. The distance between the two reactive C atoms on the thiophene rings is 3.834 (7)  . One of the n-pentyl groups is disordered over two positions; the site occupancy factors are ca 0.7 and 0.3.
%U http://scripts.iucr.org/cgi-bin/paper?S160053680800202X