J. Phys. IV France 114 (2004) 439
A new approach in the design of organic superconductorsJ. Yamada
Department of Material Science, Graduate School of Science, Himeji Institute of Technology, 3-2-1 Kouto, Kamigori-cho, Ako-gun, Hyogo 678-1297, Japan
The preparation of charge-transfer (CT) salts of DODHT [(1,4-dioxane-2,3-diyldithio) dihydrotetrathia-fulvalene], BDH-TTP [2,5-bis(1,3-dithiolan-2-ylidene)-1,3,4,6-tetrathiapentalene] and BDA-TTP [2,5-bis(1,3-dithian-2-ylidene)-1,3,4,6-tetrathiapentalene] has been investigated to develop new organic superconductors. The DODHT and BDA-TTP donors give organic superconductors (DODHT) 2BF H 2O and (BDA-TTP) 2X (X = GaCl 4 and FeCl 4) under applied pressures, whereas (BDH-TTP)Br 0.88 and (BDA-TTF) 2X (X = BF 4, BF H 2O and ClO 4) fail to exhibit superconductivity at ambient pressure. Key words. Organic superconductor - -electron donor - -bond framework - loose donor packing motif.
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