Tetrathiafulvalenoparacyclophanes and tetrathiafulvalenophanes
Abstract
cis-Cyclophane-like tetrathiafulvalenes (TTF)7 or 8 with two sulphur atoms linked at the 4 and 4′ positions of the two dithiole moities of the TTF are efficiently obtained from 4-thioxo-mesoionic dithioles; if the linking bridge is too small (less than 8 atoms) a cage-like bis-TTF 9 is obtained.