An Ni-4 single-molecule magnet: Synthesis, structure and low-temperature magnetic behavior

M Moragues-Canovas, M Helliwell, L Ricard, E Riviere, W Wernsdorfer, E Brechin, T Mallah

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

The reaction of Ni(NO3)(2).6H(2)O with H(3)thme (trihydroxymethylethane) in the presence of NaOMe leads to a tetranuclear Ni-4 complex with a cubane-like structure. Intramolecular ferromagnetic interactions [J = 10 cm(-1) based on H -J((S1S2)-S-. + (S1S3)-S-. + (S1S4)-S-. + (S2S3)-S-. + (S2S4)-S-. + (S3S4)-S-.)] lead to an S 4 ground state stabilized by 40 cm(-1) from the first S = 3 excited state. Magnetization vs. field studies at different temperatures above 2 K suggest the presence of an axial magnetic anisotropy. Single-crystal magnetization measurements show a single-molecule-magnetic behavior below T = 0.5 K with fast relaxation of the magnetization due to resonant quantum tunneling. ((C) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004).

Original languageEnglish
Pages (from-to)2219-2222
Number of pages4
JournalEuropean journal of inorganic chemistry
Issue number11
DOIs
Publication statusPublished - 7 Jun 2004

Keywords / Materials (for Non-textual outputs)

  • nickel
  • ferromagnetism
  • single-molecule studies
  • cubane complexes
  • tripodal ligands
  • CRYSTAL-STRUCTURE
  • SCHIFF-BASE
  • NICKEL(II) COMPLEXES
  • CLUSTERS
  • EXCHANGE
  • LIGANDS
  • ATOMS

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