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Structural Characteristics in a Stable Metallic ET Salt with Unusually High Oxidation State (ET: Bis(ethylenedithio)tetrathiafulvalene)

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Title: Structural Characteristics in a Stable Metallic ET Salt with Unusually High Oxidation State (ET: Bis(ethylenedithio)tetrathiafulvalene)
Authors: Minemawari, Hiromi Browse this author
Jose, Judy Fe F. Browse this author
Takahashi, Yukihiro Browse this author →KAKEN DB
Naito, Toshio Browse this author →KAKEN DB
Inabe, Tamotsu Browse this author →KAKEN DB
Issue Date: Mar-2012
Publisher: Chemical Society of Japan
Journal Title: Bulletin of the Chemical Society of Japan
Volume: 85
Issue: 3
Start Page: 335
End Page: 340
Publisher DOI: 10.1246/bcsj.20110253
Abstract: Electrolysis of ET in a mixed solvent of methanol/CHCl3 with bromide yielded (ET)3(Br3)5, in which an unusually high formal charge of ET^[5/3+] is achieved. ET forms a two-dimensional conducting sheet incorporating Br3-[-]. Despite the high formal charge of the ET cations, the strong electrostatic attractions between the ET cations and Br3^[-] support aggregation of the ET cations, allowing sufficient π-π overlap for delocalization of the π-electrons. The crystal shows stable metallic behavior down to low temperatures, being consistent with the metallic band structure with two-dimensional Fermi surfaces and Pauli-like paramagnetism down to low temperatures. The lack of any indication of instability in the metallic phase due to correlation effects is considered to result from an ionic-crystal-like structure, in which the lattice is more resistant toward lattice deformation and/or shrinkage than in typical partially oxidized salts with low formal charges.
Type: article (author version)
URI: http://hdl.handle.net/2115/52228
Appears in Collections:理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 稲辺 保

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