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

doi:10.1002/chem.201602439

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

Institute for Materials Research (IMR)

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

Here we report the synthesis, structure and detailed characterisation of three n-membered oxovanadium rings, Na_n[(V=O)_nNa_n(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 language	English
Pages (from-to)	14205-14212
Number of pages	8
Journal	Chemistry - A European Journal
Volume	22
Issue number	40
DOIs	https://doi.org/10.1002/chem.201602439
Publication status	Published - 2016

Keywords

cluster compounds
cyclodextrins
macrocyclic ligands
magnetic properties
vanadium

ASJC Scopus subject areas

Catalysis
Organic Chemistry

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title = "Studies on the Magnetic Ground State of a Spin M{\"o}bius Strip",

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.",

keywords = "cluster compounds, cyclodextrins, macrocyclic ligands, magnetic properties, vanadium",

author = "Newton, {Graham N.} and Norihisa Hoshino and Takuto Matsumoto and Takuya Shiga and Motohiro Nakano and Hiroyuki Nojiri and Wolfgang Wernsdorfer and Yuji Furukawa and Hiroki Oshio",

year = "2016",

doi = "10.1002/chem.201602439",

language = "English",

volume = "22",

pages = "14205--14212",

journal = "Chemistry - A European Journal",

issn = "0947-6539",

publisher = "Wiley-VCH Verlag",

number = "40",

}

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

PY - 2016

Y1 - 2016

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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DO - 10.1002/chem.201602439

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VL - 22

SP - 14205

EP - 14212

JO - Chemistry - A European Journal

JF - Chemistry - A European Journal

SN - 0947-6539

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