Tetrathiapentalene-based organic conductors with 1 ∶ 1 composition

Mao Katsuhara; Masanobu Aragaki; Shinya Kimura; Takehiko Mori; Yohji Misaki; Kazuyoshi Tanaka

doi:10.1039/B101542G

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Mao Katsuhara,^a Masanobu Aragaki,^a Shinya Kimura,^a Takehiko Mori,*^a Yohji Misaki^b and Kazuyoshi Tanaka^b

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* Corresponding authors

^a Department of Organic and Polymeric Materials, Graduate School of Science and Engineering, Tokyo Institute of Technology, Meguro-ku, Tokyo, Japan
E-mail: takehiko@o.cc.titech.ac.jp
Fax: +81-3-5734-2876
Tel: +81-3-5734-2427

^b Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Yoshida, Kyoto, Japan

Abstract

We have prepared TTM-TTP-based (TTM-TTP = 2,5-bis[4,5-bis(methylthio)-1,3-dithiol-2-ylidene]-1,3,4,6-tetrathiapentalene) organic conductors with 1 ∶ 1 composition including tetrahedral anions in order to elucidate electronic properties of half-filled conductors. We have obtained three new 1 ∶ 1 composition salts (TTM-TTP)GaCl₄(PhCl)_0.5, (TTM-TTP)GaBr₄(PhCl)_0.5, and (TTM-TTP)GaBr_2.0Cl_2.0(PhCl)_0.5, which have dimerized donor columns. (TTM-TTP)GaCl₄(PhCl)_0.5 shows paramagnetism in spite of the apparent band-insulating electronic structure. In addition we have obtained a metal alloy salt, (TTM-TTP)Fe_0.9Ga_0.1Cl₄. This salt has uniform donor columns and shows high electrical conductivity.

This article is part of the themed collection: Metal-organic conductors (enriched issue)

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Supplementary files

Crystal structure data TXT (96K)

Article information

DOI: https://doi.org/10.1039/B101542G
Article type: Paper
Submitted: 26 Feb 2001
Accepted: 04 May 2001
First published: 23 May 2001

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J. Mater. Chem., 2001,11, 2125-2130

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