Synthesis and properties of novel unsymmetrical tetraselenafulvalene donors, EDT-PT-TSF and EDT-PS-TSF

Kazuo Takimiya; Satoshi Murakami; Mie Kodani; Yoshio Aso; Tetsuo Otsubo

doi:10.1080/10587250290101568

Synthesis and properties of novel unsymmetrical tetraselenafulvalene donors, EDT-PT-TSF and EDT-PS-TSF

Kazuo Takimiya, Satoshi Murakami, Mie Kodani, Yoshio Aso, Tetsuo Otsubo

Research output: Contribution to journal › Conference article › peer-review

1 Citation (Scopus)

Abstract

In order to develop novel electron donors, by structural modification to a superior electron donor, bis(ethylenedithio)-tetraselenafulvalene (BETS 2), unsymmetrical TSF derivatives ethylenedithio-propylenethio-TSF (EDT-PT-TSF 5) and ethylenedithio-propyleneseleno-TSF (EDT-PS-TSF 6) have been effectively synthesized. The synthetic method involves a one-pot formation of 1,3-diselenole-2-selones from acetylene derivatives, a cross-coupling to the TSF system, and finally a ring construction of the outer heterocycles. Electro-crystallization of S affords a series of conductive radical cation salts with BF₄^-, PF₆^-, AsF ₆^-, ClO₄^-, and SbF₆ ^- anions, which are of the 2:1 or 3:2 composition ratio. All of the salts with 2:1 ratio are stable metals down to 4.2K without any specific phase transitions. X-ray crystallographic analyses confirm that they have so-called K-type donor arrangements.

Original language	English
Pages (from-to)	189-195
Number of pages	7
Journal	Molecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals
Volume	380
DOIs	https://doi.org/10.1080/10587250290101568
Publication status	Published - 2002 Dec 1
Externally published	Yes
Event	Proceedings of the International Chemical Congress of the Pacific Basin Societies (PACIFICHEM 2001): Proceedings of the Symposium on Twenty years of Organic Superconductors: New Materials, New Insights - Honolulu, HI, United States Duration: 2000 Dec 14 → 2000 Dec 19

Keywords

Organic conductor
Tetraselenafulvalene: radical cation salt
X-ray crystallographic analysis

ASJC Scopus subject areas

Condensed Matter Physics

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10.1080/10587250290101568

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Synthesis and properties of novel unsymmetrical tetraselenafulvalene donors, EDT-PT-TSF and EDT-PS-TSF. / Takimiya, Kazuo; Murakami, Satoshi; Kodani, Mie; Aso, Yoshio; Otsubo, Tetsuo.

In: Molecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals, Vol. 380, 01.12.2002, p. 189-195.

Research output: Contribution to journal › Conference article › peer-review

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abstract = "In order to develop novel electron donors, by structural modification to a superior electron donor, bis(ethylenedithio)-tetraselenafulvalene (BETS 2), unsymmetrical TSF derivatives ethylenedithio-propylenethio-TSF (EDT-PT-TSF 5) and ethylenedithio-propyleneseleno-TSF (EDT-PS-TSF 6) have been effectively synthesized. The synthetic method involves a one-pot formation of 1,3-diselenole-2-selones from acetylene derivatives, a cross-coupling to the TSF system, and finally a ring construction of the outer heterocycles. Electro-crystallization of S affords a series of conductive radical cation salts with BF4-, PF6-, AsF 6-, ClO4-, and SbF6 - anions, which are of the 2:1 or 3:2 composition ratio. All of the salts with 2:1 ratio are stable metals down to 4.2K without any specific phase transitions. X-ray crystallographic analyses confirm that they have so-called K-type donor arrangements.",

keywords = "Organic conductor, Tetraselenafulvalene: radical cation salt, X-ray crystallographic analysis",

author = "Kazuo Takimiya and Satoshi Murakami and Mie Kodani and Yoshio Aso and Tetsuo Otsubo",

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T1 - Synthesis and properties of novel unsymmetrical tetraselenafulvalene donors, EDT-PT-TSF and EDT-PS-TSF

AU - Takimiya, Kazuo

AU - Murakami, Satoshi

AU - Kodani, Mie

AU - Aso, Yoshio

AU - Otsubo, Tetsuo

PY - 2002/12/1

Y1 - 2002/12/1

N2 - In order to develop novel electron donors, by structural modification to a superior electron donor, bis(ethylenedithio)-tetraselenafulvalene (BETS 2), unsymmetrical TSF derivatives ethylenedithio-propylenethio-TSF (EDT-PT-TSF 5) and ethylenedithio-propyleneseleno-TSF (EDT-PS-TSF 6) have been effectively synthesized. The synthetic method involves a one-pot formation of 1,3-diselenole-2-selones from acetylene derivatives, a cross-coupling to the TSF system, and finally a ring construction of the outer heterocycles. Electro-crystallization of S affords a series of conductive radical cation salts with BF4-, PF6-, AsF 6-, ClO4-, and SbF6 - anions, which are of the 2:1 or 3:2 composition ratio. All of the salts with 2:1 ratio are stable metals down to 4.2K without any specific phase transitions. X-ray crystallographic analyses confirm that they have so-called K-type donor arrangements.

AB - In order to develop novel electron donors, by structural modification to a superior electron donor, bis(ethylenedithio)-tetraselenafulvalene (BETS 2), unsymmetrical TSF derivatives ethylenedithio-propylenethio-TSF (EDT-PT-TSF 5) and ethylenedithio-propyleneseleno-TSF (EDT-PS-TSF 6) have been effectively synthesized. The synthetic method involves a one-pot formation of 1,3-diselenole-2-selones from acetylene derivatives, a cross-coupling to the TSF system, and finally a ring construction of the outer heterocycles. Electro-crystallization of S affords a series of conductive radical cation salts with BF4-, PF6-, AsF 6-, ClO4-, and SbF6 - anions, which are of the 2:1 or 3:2 composition ratio. All of the salts with 2:1 ratio are stable metals down to 4.2K without any specific phase transitions. X-ray crystallographic analyses confirm that they have so-called K-type donor arrangements.

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KW - X-ray crystallographic analysis

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