Synthesis of TSF Donors Substituted with the mesoDimethylethylenedithio Group: Structures and Conducting Properties of (meso-DM-BETS)(2)X (X- = PF6- and AsF6-)

Synthesis and X-ray structure analysis of TSF-based donors substituted with the meso-dimethylethylenedithio group (mesoDM-EDT-TSF and meso-DM-BETS) were successfully performed. The donor molecules in (meso-DM-BETS)(2)X (X- = PF6(-) and AsF6(-)) formed a dimerized face-to- face p-stack, and the packi...

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Published inBulletin of the Chemical Society of Japan Vol. 96; no. 1; pp. 35 - 41
Main Authors Kinoshita, Naoya, Shirahata, Takashi, Naito, Toshio, Misaki, Yohji
Format Journal Article
LanguageEnglish
Published TOKYO Chemical Soc Japan 01.01.2023
Subjects
Chemistry
Chemistry, Multidisciplinary
Physical Sciences
Science & Technology
ORGANIC SUPERCONDUCTOR
ENERGY
Electrical conductivity
TETRATHIAFULVALENE
SEMICONDUCTOR
RADICAL-CATION SALTS
STATE
TTF DERIVATIVES
MODELS
Molecular conductors
METAL
Crystal structure
HISTORY
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Summary:Synthesis and X-ray structure analysis of TSF-based donors substituted with the meso-dimethylethylenedithio group (mesoDM-EDT-TSF and meso-DM-BETS) were successfully performed. The donor molecules in (meso-DM-BETS)(2)X (X- = PF6(-) and AsF6(-)) formed a dimerized face-to- face p-stack, and the packing pattern could be classified as ss-type. A tightbinding band calculation suggested that the meso-DM-BETS salts have a two-dimensional Fermi surface with a wide bandwidth. Both salts exhibited metallic conductivities down to low temperatures with sigma(r.t.) = 45-46 S cm(-1).
ISSN:0009-2673
1348-0634
DOI:10.1246/bcsj.20220281