Structures and Properties of New Organic Conductors: BEDT-TTF, BEST and BETS Salts of the HOC2H4SO3− Anion

New bis(ethylenedithio)tetrathiafulvalene (BEDT-TTF)-, bis(ethylenediseleno)tetrathiafulvalene (BEST)- and bis(ethylenedithio)tetraselenafulvalene (BETS)-based organic charge-transfer (CT) salts—α-(BEDT-TTF)3(HOC2H4SO3)2 (1), β-(BEST)3(HOC2H4SO3)2·H2O (2) and α-(BETS)2(HOC2H4SO3)·H2O (3)—have been p...

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Bibliographic Details
Published in:Crystals (Basel) 2020-09, Vol.10 (9), p.775
Main Authors: Akutsu, Hiroki, Koyama, Yuta, Turner, Scott S., Furuta, Keigo, Nakazawa, Yasuhiro
Format: Article
Language:English
Subjects:
Anions
bis(ethylenediseleno)tetrathiafulvalene (BEST)
bis(ethylenedithio)tetraselenafulvalene (BETS)
bis(ethylenedithio)tetrathiafulvalene (BEDT-TTF)
Charge transfer
Chemists
Conductors
Crystal structure
electrical resistivity
magnetic susceptibility
Metal-insulator transition
organic conductors
Packaging
Phase transitions
Physical properties
Physicists
Salt
Software packages
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Summary:New bis(ethylenedithio)tetrathiafulvalene (BEDT-TTF)-, bis(ethylenediseleno)tetrathiafulvalene (BEST)- and bis(ethylenedithio)tetraselenafulvalene (BETS)-based organic charge-transfer (CT) salts—α-(BEDT-TTF)3(HOC2H4SO3)2 (1), β-(BEST)3(HOC2H4SO3)2·H2O (2) and α-(BETS)2(HOC2H4SO3)·H2O (3)—have been prepared. Salts 1 and 2 show semiconducting behaviour. Salt 3, which is almost isostructural to α-(BETS)2I3, shows metallic behaviour down to 70 K and then shows a broader metal–insulator transition than that of α-(BETS)2I3. The reason for the difference in behaviour is estimated by the comparison of the Madelung energies of the full set of patterns of possible donor’s charge-ordered and anion’s disordered states.
ISSN:2073-4352
2073-4352
DOI:10.3390/cryst10090775