1999年6月
Magnetic coupling of nitronyl nitroxide-based biradical salts
SYNTHETIC METALS
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- 巻
- 103
- 号
- 1-3
- 開始ページ
- 2271
- 終了ページ
- 2272
- 記述言語
- 英語
- 掲載種別
- DOI
- 10.1016/S0379-6779(98)00547-5
- 出版者・発行元
- ELSEVIER SCIENCE SA
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 tripler 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.
- リンク情報
- ID情報
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- DOI : 10.1016/S0379-6779(98)00547-5
- ISSN : 0379-6779
- Web of Science ID : WOS:000081101500237