Magnetic coupling of nitronyl nitroxide-based biradical salts

D. Shiomi, K. Ito, M. Nishizawa, K. Sato, T. Takui, K. Itoh

Research output: Contribution to journalConference articlepeer-review

20 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 the magnetic susceptibility measurement, while the susceptibility and ESR measurements suggested the singlet ground state for the 3,5-biradical. The potential of the pyridine-based biradicals as the components of 'organic salt ferrimagnetics' is discussed.

Original languageEnglish
Pages (from-to)2271-2272
Number of pages2
JournalSynthetic Metals
Volume103
Issue number1-3
DOIs
Publication statusPublished - 1999 Jun 24
Externally publishedYes
EventProceedings of the 1998 International Conference on Science and Technology of Synthetic Metals (ICSM-98) - Montpellier
Duration: 1998 Jul 121998 Jul 18

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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