Single-molecule magnet involving strong exchange coupling in terbium(III) complex with 2,2′-bipyridin-6-yl tert-butyl nitroxide

Takuya Kanetomo, Shunsuke Yoshii, Hiroyuki Nojiri, Takayuki Ishida

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)

Abstract

A novel terbium(III)-radical complex [TbIII(hfac)3(6bpyNO)] (Tb-6bpyNO; 6bpyNO = 2,2′-bipyridin-6-yl tert-butyl nitroxide) was synthesized. The intramolecular antiferromagnetic interaction in Tb-6bpyNO was confirmed by comparison with the magnetic properties of [TbIII(hfac)3(6bpyCO)] (Tb-6bpyCO; 6bpyCO = 2,2′-bipyridin-6-yl tert-butyl ketone) together with [YIII(hfac)3(6bpyNO)]. Tb-6bpyNO showed a hysteresis loop with negligible coersivity below 1.6 K. The dispersion of the magnetic susceptibility with an applied bias field of 2000 Oe gave the energy barrier Ea/kB = 21.1(8) K. In contrast, Tb-6bpyCO did not behave as a single-molecule magnet, despite having practically the same crystal field.

Original languageEnglish
Pages (from-to)860-866
Number of pages7
JournalInorganic Chemistry Frontiers
Volume2
Issue number9
DOIs
Publication statusPublished - 2015 Sep 1

ASJC Scopus subject areas

  • Inorganic Chemistry

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