Open Access. Powered by Scholars. Published by Universities.®
![Digital Commons Network](http://assets.bepress.com/20200205/img/dcn/DCsunburst.png)
Social and Behavioral Sciences Commons™
Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 1 of 1
Full-Text Articles in Social and Behavioral Sciences
Flip-Type Disorder In 3-Substituted 2,2':5',2''-Terthiophenes, David L. Officer, Pawel W. Wagner, Maciej Kubicki
Flip-Type Disorder In 3-Substituted 2,2':5',2''-Terthiophenes, David L. Officer, Pawel W. Wagner, Maciej Kubicki
Faculty of Science - Papers (Archive)
In the crystal structures of four thiophene derivs., (E)-3'-[2-(anthracen-9-yl)ethenyl]-2,2':5',2''-terthiophene, C28H18S3, (E)-3'-[2-(1-pyrenyl)ethenyl]-2,2':5',2''-terthiophene, C30H18S3, (E)-3'-[2-(3,4-dimethoxyphenyl)ethenyl]-2,2':5',2''-terthiophene, C22H18O2S3, and (E,E)-1,4-bis[2-(2,2':5',2''-terthiophen-3'-yl)ethenyl]-2,5-dimethoxybenzene, C36H26O2S6, at least one of the terminal thiophene rings is disordered and the disorder is of the flip type. The terthiophene fragments are far from being coplanar, contrary to terthiophene itself. The central C-C=C-C fragments are almost planar but the bond lengths suggest slight delocalization within this fragment.