Studies on the Magnetic Ground State of a Spin Möbius Strip

Graham N. Newton, Norihisa Hoshino, Takuto Matsumoto, Takuya Shiga, Motohiro Nakano, Hiroyuki Nojiri, Wolfgang Wernsdorfer, Yuji Furukawa, Hiroki Oshio

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Here we report the synthesis, structure and detailed characterisation of three n-membered oxovanadium rings, Nan[(V=O)nNan(H2O)n(α, β, or γ-CD)2]⋅m H2O (n=6, 7, or 8), prepared by the reactions of (V=O)SO4⋅x H2O with α, β, or γ-cyclodextrins (CDs) and NaOH in water. Their alternating heterometallic vanadium/sodium cyclic core structures were sandwiched between two CD moieties such that O-Na-O groups separated the neighbouring vanadyl ions. Antiferromagnetic interactions between the S=1/2 vanadyl ions led to S=0 ground states for the even-membered rings, but to two quasi-degenerate S=1/2 states for the spin-frustrated heptanuclear cluster.

Original languageEnglish
Pages (from-to)14205-14212
Number of pages8
JournalChemistry - A European Journal
Volume22
Issue number40
DOIs
Publication statusPublished - 2016

Keywords

  • cluster compounds
  • cyclodextrins
  • macrocyclic ligands
  • magnetic properties
  • vanadium

ASJC Scopus subject areas

  • Catalysis
  • Organic Chemistry

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