Exchange coupling and its chemical trend studied by high-frequency epr on heterometallic [Ln2Ni] complexes

Atsushi Okazawa, Takashi Shimada, Norimichi Kojima, Shunsuke Yoshii, Hiroyuki Nojiri, Takayuki Ishida

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

We applied high-frequency electron paramagnetic resonance to trinuclear 4f-3d heterometallic complexes, [{Ln(hfac)3}2{Ni(dpk) 2(py)2}] (Ln = Y, Gd, Tb, and Ho; hfac = hexafluoroacetylacetonate, dpk = di-2-pyridyl ketoximate, and py = pyridine), and determined the exchange parameter JLn-Ni as well as nickel(II) zero-field splitting parameters. In contrast to the antiferromagnetic Dy analogue, ferromagnetic couplings were precisely characterized as J Gd-Ni/kB = +0.301(4) K, JTb-Ni/kB = +0.216(12) K, and JHo-Ni/kB = +0.110(3) K (defined as -JLn-NiΣJLnzSNi).

Original languageEnglish
Pages (from-to)13351-13355
Number of pages5
JournalInorganic chemistry
Volume52
Issue number23
DOIs
Publication statusPublished - 2013 Dec 2

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

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