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Abstract
In order to get π-donors prone to develop organic metals of enhanced dimensionality (> lD), the TTF or TSF derivatives 1-4 bearing two or four 1,4-dithiafulven-6-yl substituents adequately R-substituted have been synthesized. Usual and thin layer cyclic voltammetries evidence their tremendous π-donor ability and also the various stoichiometries of the salts produced upon their oxidation. Among them, X ray structure of [2 (saturated, R[dbnd]H)]1 (ClO4)1 exhibits an unusual 2-D network and behaves as a semiconductor of uncommon high conductivity (close to 1 S.cm−1 at r.t.). This property is indicative of weak Coulombic repulsions as well as strong interactions between the oxidized donors. By changing the R-substituents of 2 we have recently obtained a (2)2(anion)1 salt endowed with a 2D character.