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Synthesis and Physical Properties of Purely Organic BEDT-TTF-Based Conductors Containing Hetero-/Homosubstituted Cl/CN-Anilate Derivatives

AuthorsSahadevan, Suchithra Ashoka; Monni, Noemi; Abherve, Alexandre; Auban-Senzier, Pascale; Canadell, Enric ; Mercuri, Maria Laura; Avarvari, Narcis
Mott Insulator
Issue Date16-Oct-2017
PublisherAmerican Chemical Society
CitationInorganic Chemistry 56(20): 12564-12571 (2017)
AbstractRadical 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 [BEDTTTF]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 α′-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 10−2 S cm−1 and an activation energy Ea of 1900 K.
Publisher version (URL)http://dx.doi.org/10.1021/acs.inorgchem.7b01994
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