Oximato-bridged light-lanthanide Ln 4Cu complexes showing ferromagnetic Ln-Cu exchange coupling

Kei Fujiwara, Atsushi Okazawa, Norimichi Kojima, Go Tanaka, Shunsuke Yoshii, Hiroyuki Nojiri, Takayuki Ishida

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Heterometallic pentanuclear coordination compounds [Ln 3+ 4Cu 2+] involving light lanthanide ions, Ce, Pr, Nd, Sm, and Eu, were synthesized and structurally characterized. The exchange interactions between the Ln and Cu ions were evaluated by high-frequency electron paramagnetic resonance and magnetization studies, clarifying the presence of ferromagnetic exchange couplings in Nd-Cu (J Nd-Cu/k B = +0.30(6) K) and Sm-Cu (J Sm-Cu/k B = +2.08(3) K), very small couplings in Ce-Cu and Pr-Cu, and the absence in Eu-Cu. A significant chemical trend is found in the order of the atomic number.

Original languageEnglish
Pages (from-to)49-54
Number of pages6
JournalChemical Physics Letters
Volume530
DOIs
Publication statusPublished - 2012 Mar 19

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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