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

Authors :
Hiroki Akutsu
Yuta Koyama
Scott S. Turner
Keigo Furuta
Yasuhiro Nakazawa
Source :
Crystals, Vol 10, Iss 9, p 775 (2020)
Publication Year :
2020
Publisher :
MDPI AG, 2020.

Abstract

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.

Details

Language :
English
ISSN :
20734352
Volume :
10
Issue :
9
Database :
Directory of Open Access Journals
Journal :
Crystals
Publication Type :
Academic Journal
Accession number :
edsdoj.66ec64d7a6cc464b8b435ae50ca173d1
Document Type :
article
Full Text :
https://doi.org/10.3390/cryst10090775