University of Cagliari
Synthesis and physical properties of purely organic BEDT-TTF-based conductors containing hetero-/homosubstituted Cl/CN-anilate derivatives
Ashoka Sahadevan, Suchithra;Monni, Noemi;Mercuri, Maria L.;
2017-01-01
Abstract
Radical cation salts composed of a bis(ethylenedithio)tetrathiafulvalene (ET) donor with homo-/heterosubstituted Cl/CN anilic acids as purely organic molecular conducting materials formulated as [BEDT-TTF]2[HClCNAn] (1) and [BEDT-TTF][HCl2An] (2) have been prepared by electrocrystallization. Compounds 1 and 2 crystallized in the monoclinic space group P2/c for 1 and I2/a for 2, showing segregated donor-anion layers arranged in a αâ²-type donor packing pattern (1) and twisted parallel columns (2), respectively. Single-crystal conductivity measurements show that 1 is a semiconductor with room-temperature conductivity of 10-2S cm-1and an activation energy Eaof 1900 K.
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