A stable radical-substituted radical cation with strongly ferromagnetic interaction: nitronyl nitroxide-substituted 5,10-diphenyl-5,10-dihydrophenazine radical cation

Shinsuke Hiraoka; Toshihiro Okamoto; Masatoshi Kozaki; Daisuke Shiomi; Kazunobu Sato; Takeji Takui; Keiji Okada

doi:10.1021/ja0367748

A stable radical-substituted radical cation with strongly ferromagnetic interaction: nitronyl nitroxide-substituted 5,10-diphenyl-5,10-dihydrophenazine radical cation

J Am Chem Soc. 2004 Jan 14;126(1):58-9. doi: 10.1021/ja0367748.

Authors

Shinsuke Hiraoka¹, Toshihiro Okamoto, Masatoshi Kozaki, Daisuke Shiomi, Kazunobu Sato, Takeji Takui, Keiji Okada

Affiliation

¹ Departments of Chemistry and Materials Science, Graduate School of Science, Osaka City University, Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan.

PMID: 14709058
DOI: 10.1021/ja0367748

Abstract

A stable radical-substituted radical ion with strongly ferromagnetic intramolecular interaction (J) between the radical and radical ion sites is an attractive spin building block of organic magnets. We prepared 2-nitronyl nitroxide-substituted 5,10-diphenyl-5,10-dihydrophenazine radical cation, 1+. The 1+ salt was stable under aerated conditions at room temperature and had a large J/kB value (>/=+700 K).