Abstract
We synthesized novel TTF dimer molecules in which two TTF moieties are connected to each other by two trisulfide chains. Structure of tetrakis(methylthio) derivative 1 is cyclophane-like one and interplanar distance in the dimer is 3.86 å. 1 shows two pairs of reversible one-electron redox waves (+0.57 and +0.67 V vs. Ag/AgCl in PhCN) and one pair of reversible two-electron redox wave (+1.15 V). The ClO 4 − salt of 1 has 1:2 (Donor:Anion) composition and is an insulator. On the other hand the PF 6 − salt of bis(trimethylene) derivative 2 has one-dimensional columnar donor array with 1:1 composition and shows semiconducting behavior (σ rt = 10 −1 Scm −1).
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