Charged Nitronyl Nitroxide Biradicals as Building Blocks for Molecular Ferrimagnetics

Daisuke Shiomi; Kazuhiko Ito; Masahiro Nishizawa; Syuichiro Hase; Kazunobu Sato; Takeji Takui; Koichi Itoh

doi:10.1080/10587259908023307

Charged Nitronyl Nitroxide Biradicals as Building Blocks for Molecular Ferrimagnetics

Daisuke Shiomi, Kazuhiko Ito, Masahiro Nishizawa, Syuichiro Hase, Kazunobu Sato, Takeji Takui, Koichi Itoh

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

Abstract

A crystal-engineering approach to organic ferrimagnetics is reported. Coulombic energy between cationic biradical with S=1 and anionic radical with S=1/2 is a promising driving force of co-crystallizing the hetero-molecular assemblage in a controllable manner. As a cationic component of "organic salt ferrimagnetics", two kinds of nitronyl nitroxide biradicals, 2,6- and 3,5-substituted pyridine derivatives, were examined. It was predicted from semi-empirical molecular orbital calculations that both the 2,6- and 3,5-derivatives have the triplet ground states both in the neutral and cationic states. The molecular ground state of the 2,6-biradical in the neutral state was found to be triplet from magnetic susceptibility measurements, while the susceptibility and ESR measurements suggested a singlet ground state for the 3,5-biradical.

Original language	English
Pages (from-to)	99-108
Number of pages	10
Journal	Molecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals
Volume	334
DOIs	https://doi.org/10.1080/10587259908023307
Publication status	Published - 1999 Jan 1

Keywords

Crystal engineering
Nitronyl nitroxide
Organic ferrimagnet
Organic salt
Pyridinium cation

ASJC Scopus subject areas

Condensed Matter Physics

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Charged Nitronyl Nitroxide Biradicals as Building Blocks for Molecular Ferrimagnetics. / Shiomi, Daisuke; Ito, Kazuhiko; Nishizawa, Masahiro; Hase, Syuichiro; Sato, Kazunobu; Takui, Takeji; Itoh, Koichi.

In: Molecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals, Vol. 334, 01.01.1999, p. 99-108.

Research output: Contribution to journal › Article › peer-review

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AU - Sato, Kazunobu

AU - Takui, Takeji

AU - Itoh, Koichi

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