Nano-sized tetralanthanoid-copper complex ions containing oximato bridges

Sohei Ueki, Muhamad Sahlan, Takayuki Ishida, Takashi Nogami

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Complexation of LnIII(hfac)3, Ln III(OAc)3, and [CuII(dmg)2] 2- in the presence of Ph4P+ gave [Ln 4Cu1]-type pentanuclear complexes (dmg = dimethylglyoximate dianion; Ln = La, Nd, Eu, Gd, Tb). Single-crystal X-ray diffraction analyses revealed that four Ln(IIl) ions formed a rectangular array around the copper ion at its inversion center. The [Ln4Cu 1] core structures are essentially the same regardless of the different Ln ions. From the magnetic susceptibility measurements, the Cu(dmg)2 dianion moiety has been shown to play a role of the ferrimagnetic coupler among the Gd spins. The out-of-phase ac susceptibility of the [Tb4Cu1] complex exhibited anomalous frequency- dependence below 4 K, indicating blocking behavior potentially related to a single-molecule magnet.

Original languageEnglish
Pages (from-to)217-220
Number of pages4
JournalSynthetic Metals
Volume154
Issue number1-3
DOIs
Publication statusPublished - 22 Sep 2005

Keywords

  • Lanthanide
  • Magnetic measurements
  • Molecule-based magnet
  • Rare earth metal
  • Single-molecule magnet

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