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 language | English |
|---|---|
| Pages (from-to) | 2271-2272 |
| Number of pages | 2 |
| Journal | Synthetic Metals |
| Volume | 103 |
| Issue number | 1-3 |
| DOIs | |
| Publication status | Published - 1999 Jun 24 |
| Externally published | Yes |
| Event | Proceedings of the 1998 International Conference on Science and Technology of Synthetic Metals (ICSM-98) - Montpellier Duration: 1998 Jul 12 → 1998 Jul 18 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry