Online article for Non-subscribers

Pay per view

Heterocycles has a pay-per-view service for Non-subscribers.
You will be able to directly purchase the full text article through PayPal.
Your purchased Paper can be downloaded after the payment is completed.
An e-mail will be sent the URL to download the paper.
If you have any questions, please contact:

Price: ¥ 4,400 (Yen only)
Period: This Article can be accessed for 7 days.

Communication | Regular issue | Vol 26, No. 8, 1987, pp.2037-2042
Published online, 1st January, 1970
DOI: 10.3987/R-1987-08-2037
A Rigid Conformation for 5-Fluoro-2,11-dithia[3.3](1,4)naphthalenometacyclophane with Absence of Meta-ring Flipping

Yee-Hing Lai and Thian-Guan Peck

*Department of Chemistry, National University of Singapore, 10 Kent Ridgh Crescent, 119260, Singapore


19F and 1H nmr data suggest the presence of only one major isomer for the title compound with the unexpected stacking of the benzene and naphthalene rings. Variable temperature 1H nmr studies suggested no meta-ring flipping even at 160°C. The chemical shifts of the methylene protons were observed to be solvent and temperature dependent. This is attributed to the solvent effects on inversion processes of the bridges.