Abstract
The electronic properties of cation radical salts derived from organometallic mixed-ligand complexes [(ppy)Au(S-S)] (ppy- = C-dehydro-2-phenylpyridine(-); S-S2- = dithiolene ligand) with Au(III)-C σ-bond were investigated. A 2:1 salt complex [(ppy)Au(C 8H4S8)]2[PF6] (C 8H4S82- = 2-{(4,5-ethylenedithio)-1, 3-dithiole-2-ylidene}-1,3-dithiole-4,5-dithiolate(2-)) exhibited semiconductive behavior under ambient pressure (ρrt = 2.6 Ω cm, E a = 0.03 eV). Magnetic measurements show that it is a Mott insulator close to the metal-insulator boundary. Raman and infrared spectra have revealed that the complex has a quasi-one-dimensional dimeric structure consisting of uniformly charged donor molecules. The complex exhibits metallic behavior at pressures above 0.8 GPa. In contrast, a similar compound [(ppy)Au(C 8H4S6O2)]2[BF 4] (C8H4S6O22- = 2-{(4,5-ethylenedioxy)-1,3-dithiole-2-ylidene}-1,3-dithiole-4,5-dithiolate(2- )) is a band insulator.
| Original language | English |
|---|---|
| Pages (from-to) | 5495-5502 |
| Number of pages | 8 |
| Journal | Inorganic Chemistry |
| Volume | 47 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - 2008 Jun 16 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Inorganic Chemistry
Cite this
Electrical properties and electronic states of molecular conductors based on unsymmetrical organometallic-dithiolene gold(III) complexes. / Kubo, Kazuya; Nakao, Akiko; Ishii, Yasuyuki; Yamamoto, Takashi; Tamura, Masafumi; Kato, Reizo; Yakushi, Kyuya; Matsubayashi, Gen Etsu.
In: Inorganic Chemistry, Vol. 47, No. 12, 16.06.2008, p. 5495-5502.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Electrical properties and electronic states of molecular conductors based on unsymmetrical organometallic-dithiolene gold(III) complexes
AU - Kubo, Kazuya
AU - Nakao, Akiko
AU - Ishii, Yasuyuki
AU - Yamamoto, Takashi
AU - Tamura, Masafumi
AU - Kato, Reizo
AU - Yakushi, Kyuya
AU - Matsubayashi, Gen Etsu
PY - 2008/6/16
Y1 - 2008/6/16
N2 - The electronic properties of cation radical salts derived from organometallic mixed-ligand complexes [(ppy)Au(S-S)] (ppy- = C-dehydro-2-phenylpyridine(-); S-S2- = dithiolene ligand) with Au(III)-C σ-bond were investigated. A 2:1 salt complex [(ppy)Au(C 8H4S8)]2[PF6] (C 8H4S82- = 2-{(4,5-ethylenedithio)-1, 3-dithiole-2-ylidene}-1,3-dithiole-4,5-dithiolate(2-)) exhibited semiconductive behavior under ambient pressure (ρrt = 2.6 Ω cm, E a = 0.03 eV). Magnetic measurements show that it is a Mott insulator close to the metal-insulator boundary. Raman and infrared spectra have revealed that the complex has a quasi-one-dimensional dimeric structure consisting of uniformly charged donor molecules. The complex exhibits metallic behavior at pressures above 0.8 GPa. In contrast, a similar compound [(ppy)Au(C 8H4S6O2)]2[BF 4] (C8H4S6O22- = 2-{(4,5-ethylenedioxy)-1,3-dithiole-2-ylidene}-1,3-dithiole-4,5-dithiolate(2- )) is a band insulator.
AB - The electronic properties of cation radical salts derived from organometallic mixed-ligand complexes [(ppy)Au(S-S)] (ppy- = C-dehydro-2-phenylpyridine(-); S-S2- = dithiolene ligand) with Au(III)-C σ-bond were investigated. A 2:1 salt complex [(ppy)Au(C 8H4S8)]2[PF6] (C 8H4S82- = 2-{(4,5-ethylenedithio)-1, 3-dithiole-2-ylidene}-1,3-dithiole-4,5-dithiolate(2-)) exhibited semiconductive behavior under ambient pressure (ρrt = 2.6 Ω cm, E a = 0.03 eV). Magnetic measurements show that it is a Mott insulator close to the metal-insulator boundary. Raman and infrared spectra have revealed that the complex has a quasi-one-dimensional dimeric structure consisting of uniformly charged donor molecules. The complex exhibits metallic behavior at pressures above 0.8 GPa. In contrast, a similar compound [(ppy)Au(C 8H4S6O2)]2[BF 4] (C8H4S6O22- = 2-{(4,5-ethylenedioxy)-1,3-dithiole-2-ylidene}-1,3-dithiole-4,5-dithiolate(2- )) is a band insulator.
UR - http://www.scopus.com/inward/record.url?scp=46949102363&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=46949102363&partnerID=8YFLogxK
U2 - 10.1021/ic800176q
DO - 10.1021/ic800176q
M3 - Article
C2 - 18473455
AN - SCOPUS:46949102363
VL - 47
SP - 5495
EP - 5502
JO - Inorganic Chemistry
JF - Inorganic Chemistry
SN - 0020-1669
IS - 12
ER -