TY - JOUR
T1 - Studies on the Magnetic Ground State of a Spin Möbius Strip
AU - Newton, Graham N.
AU - Hoshino, Norihisa
AU - Matsumoto, Takuto
AU - Shiga, Takuya
AU - Nakano, Motohiro
AU - Nojiri, Hiroyuki
AU - Wernsdorfer, Wolfgang
AU - Furukawa, Yuji
AU - Oshio, Hiroki
N1 - Funding Information:
This work was supported by a Grant-in-Aid for Scientific Research from the Ministry of Education, Culture, Sports, Science and Technology, Japan. A part of this research was supported by the U.S. Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering. Ames Laboratory is operated for the U.S. Department of Energyby Iowa State University under Contract No. DE-AC02-07CH11358. This work was also partly performed under the Inter-University Cooperative Research Program of the Institute for Materials Research, Tohoku University.
Publisher Copyright:
© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2016/9/26
Y1 - 2016/9/26
N2 - 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.
AB - 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.
KW - cluster compounds
KW - cyclodextrins
KW - macrocyclic ligands
KW - magnetic properties
KW - vanadium
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U2 - 10.1002/chem.201602439
DO - 10.1002/chem.201602439
M3 - Article
AN - SCOPUS:84983542325
VL - 22
SP - 14205
EP - 14212
JO - Chemistry - A European Journal
JF - Chemistry - A European Journal
SN - 0947-6539
IS - 40
ER -