Structure and properties of TTP conductors substituted with ethylenedioxy group

Radical cation salts of EOPT-TTP, where EOPT-TTP is 2-(4,5-ethylenedioxy-1,3-dithiol-2-ylidene)-5-(4,5-propylenedithio-l,3 dithiol-2-ylidene) -1,3,4,6-tetrathiapentalene, have been prepared. All the salts obtained so far exhibited metallic temperature dependence of resistivity down to low temperature regardless of shape and size of counter anions.