Tert-butyl 2-pyridyl nitroxide available as a paramagnetic chelate ligand for strongly exchange-coupled metal-radical compounds

Atsushi Okazawa, Takashi Nogami, Takayuki Ishida*

*この研究の対応する著者

研究成果: Article査読

38 被引用数 (Scopus)

抄録

Exchange coupling strength of tert-butyl 2-pyridyl nitroxide (2pyNO), used as a paramagnetic chelate ligand for strongly exchange-coupled metal-radical compounds were observed. A precursory hydroxylamine (2pyNOH) was prepared from 2-bromopyridine and 2-methyl-2-nitrosobutane via the conventional organo-lithium method. Crude 2pyNO, obtained from oxidation of 2pyNOH with Ag20, was introduced to a subsequent complexation without isolation by using a stoichiometric amount of nickel(II) and copper(II) perchlorates. The spin is polarized from the NO group onto the pyridine, leading to magnetic coupling in an intermolecular fashion. It was observed that the complexes are sufficiently stable during storage under ambient conditions for several months. The intermolecular antiferromagnetic coupling observed seems consistent with these intermolecular contacts.

本文言語English
ページ(範囲)2733-2735
ページ数3
ジャーナルChemistry of Materials
19
11
DOI
出版ステータスPublished - 2007 5月 29
外部発表はい

ASJC Scopus subject areas

  • 化学 (全般)
  • 化学工学(全般)
  • 材料化学

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