Abstract
Electrocrystallizaion of MDT-TSF (methylenedithiotetraselenafulvalene) in the presence of (n-Bu4N)AuI2, (n-Bu4N)PF6, or a mixture of Cu(SCN), KSCN, and 18-crown-6-ether as a supporting electrolyte gave (MDT-TSF)-X salts (X = AuI2, PF6, or Cu(NCS)2). X-ray structural analyses revealed that the salts adopt various types of crystal structures depending on the counter anion involved; the AuI2 salt takes a characteristic uniform stacking structure, the PF6 salt θ-type, and the Cu(NCS)2 salt κ-type structure. Regardless of the structure type, all the salts are highly conductive at room temperature (≥102S cm-1) and retain metallic down to low temperature. Of them, the AuI2 salt having a high conductivity of 2000 S cm-1 at room temperature showed a superconducting transition at 4.5K.
Original language | English |
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Pages (from-to) | 185-187 |
Number of pages | 3 |
Journal | Synthetic Metals |
Volume | 133-134 |
DOIs | |
Publication status | Published - 2003 Mar 13 |
Externally published | Yes |
Event | ISCOM 2001 - Rusutsu, Hokkaido, Japan Duration: 2001 Sep 10 → 2001 Sep 14 |
Keywords
- Electrocrystallization
- Radical cation salt
- Superconductor
- Tetraselenafulvalene
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry