Crystal structures and electronic properties of organic conductors based on AzaTCNQ.
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概要
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AzaTCNQ ((4-dicyanomethyl-1-pyridinio)dicyanomethanide) is employed as an organic acceptor to form new organic conductors with a TTF family such as TTF, TMTTF, TMTSF, HMTTF, and DBTTF. Among them, TMTTF and TMTSF give 2:1 single crystals and the latter affords the most conductive complex, showing a metallic characteristic down to 150 K. This can be observed by measuring the thermoelectric power and the ESR spectra. A crystal structure analysis indicates that only TMTSF molecules stack to form one-dimensional conduction pathways, while AzaTCNQ molecules are arranged side-by-side and oriented almost perpendicular to the donor molecules. There exists an orientational disorder of the nitrogen atom in the pyridine skeletone of an AzaTCNQ molecule, which may be associated with the weak temperature dependence of the electrical conductivity.
- 公益社団法人 日本化学会の論文
著者
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Mori Takehiko
Institute for Molecular Science
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Maruyama Yusei
Institute for Molecular Science
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Urayama Hatsumi
Institute For Solid State Physics University Of Tokyo
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Inabe Tamotsu
Institute for Molecular Science
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SAITO Gunzi
Institute for Molecular Science
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Urayama Hatsumi
Institute for Molecular Science
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