Bis(1,4-oxathiane-2,3-diylditho)tetrathiafulvalene 7 (TOET) is synthes
ised in four steps from 1,4-oxathiane. Compound 7 shows two reversible
redox couples at 0.56 and 0.90 V vs. SCE. Analysis of NMR spectra com
bined with energy minimisation calculations indicated that at least th
ree isomers of TOET should be present in solution. TOET forms a charge
-transfer complex with TCNQ which shows a conductivity of 3 x 10(-3) S
cm(-1).