Hexanuclear and Heptanuclear Nickel(II) Complexes of with a Non-Schiff-Base Tetradentate Ligand: an Example of Slow Motion Ferromagnetic Phase Transition at Very Low Temperature

  • Masahiro MikuriyaEmail author
  • Shoko Yano
  • Daisuke Yoshioka
  • Carley Paulsen
  • Elsa Lhotel
  • Wolfgang Wernsdorfer
  • Dominique Luneau
Original Paper


Hexanuclear and heptanuclear nickel(II) complexes with N,N′-bis(2-hydroxy-3,5-dimethylbenzyl-1,2-ethanediamine (H2hdde), [Ni6(hdde)3(OH)4(NO3)2(H2O)2]·2dmf (dmf = N,N-dimethylformamide) and [Ni7(hdde)3(OH)6(dmac)3](ClO4)2 (dmac = N,N-dimethylacetamide), were investigated. The latter complex was newly synthesized and the single-crystal X-ray structure analysis revealed a wheel-shaped heptanuclear cluster. These complexes showed a ferromagnetic interaction in the temperature dependence of magnetic susceptibilities. The micro-SQUID data of the former complex did not show SMM property, whereas the AC susceptibility measurements suggested SMM-like behavior and the zero-field-cooled and field-cooled studies showed a ferromagnetic transition near 240 mK for the latter complex.


Oligonuclear metal complex Magnetic property Ferromagnetic interaction Tetradentate ligand Ni(II) complex 


Funding Information

The present work was partially supported by Grant-in-Aid for Scientific Research No. 17 K05820 from the Ministry of Education, Culture, Sports, Science and Technology (MEXT, Japan) and the MEXT-Supported Program for the Strategic Research Foundation at Private Universities, 2010—2014.


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Authors and Affiliations

  1. 1.Department of Applied Chemistry for Environment and Research Center for Coordination Molecule-based Devices, School of Science and TechnologyKwansei Gakuin UniversitySandaJapan
  2. 2.Institute NéelCNRS & Université Grenoble AlpesGrenobleFrance
  3. 3.Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT)Eggenstein-LeopoldshafenGermany
  4. 4.Laboratoire des Multimatériaux et InterfacesUniversity Lyon, Université Claude Bernard Lyon 1, CNRSVilleurbanneFrance

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