Field-Induced Slow Magnetic Relaxation of GdIII Complex with a Pt−Gd Heterometallic Bond

Takefumi Yoshida; Goulven Cosquer; David Chukwuma Izuogu; Hiroyoshi Ohtsu; Masaki Kawano; Yanhua Lan; Wolfgang Wernsdorfer; Hiroyuki Nojiri; Brian K. Breedlove; Masahiro Yamashita

doi:10.1002/chem.201700886

Field-Induced Slow Magnetic Relaxation of Gd^III Complex with a Pt−Gd Heterometallic Bond

Takefumi Yoshida, Goulven Cosquer, David Chukwuma Izuogu, Hiroyoshi Ohtsu, Masaki Kawano, Yanhua Lan, Wolfgang Wernsdorfer, Hiroyuki Nojiri, Brian K. Breedlove, Masahiro Yamashita

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

30 Citations (Scopus)

Abstract

Heterometallic Gd−Pt complexes ([Gd₂Pt₃(H₂O)₂(SAc)₁₂] (SAc=thioacetate), [Y_1.4Gd_0.6Pt₃(H₂O)₂(SAc)₁₂], and [Gd₂Pt₃(H₂O)₆(SAc)₁₂]⋅7 H₂O have been synthesized. The crystal structures and DFT calculations indicated a Gd−Pt heretometallic bond. Single-crystal ESR spectra determined the direction of magnetic anisotropy as direction of the Gd−Pt bond. In other words, the Gd−Pt bond dictates the direction of magnetic anisotropy. The heterometallic Gd−Pt bond lowers the symmetry of the Gd ion, splitting the Kramers doublet in a dc field. Thus, we observed clear field-induced slow magnetic relaxation of [Y_1.4Gd_0.6Pt₃(H₂O)₂(SAc)₁₂] up to 36 K. The relaxation process was determined to be a direct process.

Original language	English
Pages (from-to)	4551-4556
Number of pages	6
Journal	Chemistry - A European Journal
Volume	23
Issue number	19
DOIs	https://doi.org/10.1002/chem.201700886
Publication status	Published - 2017 Apr 3

Keywords

gadolinium
heterometallic bond
magnetic properties
slow magnetic relaxation
thioacetate

ASJC Scopus subject areas

Catalysis
Organic Chemistry

Access to Document

10.1002/chem.201700886

Cite this

@article{fbdd0a9c07d94a90bdb17a26106ecc41,

title = "Field-Induced Slow Magnetic Relaxation of GdIII Complex with a Pt−Gd Heterometallic Bond",

abstract = "Heterometallic Gd−Pt complexes ([Gd2Pt3(H2O)2(SAc)12] (SAc=thioacetate), [Y1.4Gd0.6Pt3(H2O)2(SAc)12], and [Gd2Pt3(H2O)6(SAc)12]⋅7 H2O have been synthesized. The crystal structures and DFT calculations indicated a Gd−Pt heretometallic bond. Single-crystal ESR spectra determined the direction of magnetic anisotropy as direction of the Gd−Pt bond. In other words, the Gd−Pt bond dictates the direction of magnetic anisotropy. The heterometallic Gd−Pt bond lowers the symmetry of the Gd ion, splitting the Kramers doublet in a dc field. Thus, we observed clear field-induced slow magnetic relaxation of [Y1.4Gd0.6Pt3(H2O)2(SAc)12] up to 36 K. The relaxation process was determined to be a direct process.",

keywords = "gadolinium, heterometallic bond, magnetic properties, slow magnetic relaxation, thioacetate",

author = "Takefumi Yoshida and Goulven Cosquer and Izuogu, {David Chukwuma} and Hiroyoshi Ohtsu and Masaki Kawano and Yanhua Lan and Wolfgang Wernsdorfer and Hiroyuki Nojiri and Breedlove, {Brian K.} and Masahiro Yamashita",

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year = "2017",

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AU - Yoshida, Takefumi

AU - Cosquer, Goulven

AU - Izuogu, David Chukwuma

AU - Ohtsu, Hiroyoshi

AU - Kawano, Masaki

AU - Lan, Yanhua

AU - Wernsdorfer, Wolfgang

AU - Nojiri, Hiroyuki

AU - Breedlove, Brian K.

AU - Yamashita, Masahiro

PY - 2017/4/3

Y1 - 2017/4/3

N2 - Heterometallic Gd−Pt complexes ([Gd2Pt3(H2O)2(SAc)12] (SAc=thioacetate), [Y1.4Gd0.6Pt3(H2O)2(SAc)12], and [Gd2Pt3(H2O)6(SAc)12]⋅7 H2O have been synthesized. The crystal structures and DFT calculations indicated a Gd−Pt heretometallic bond. Single-crystal ESR spectra determined the direction of magnetic anisotropy as direction of the Gd−Pt bond. In other words, the Gd−Pt bond dictates the direction of magnetic anisotropy. The heterometallic Gd−Pt bond lowers the symmetry of the Gd ion, splitting the Kramers doublet in a dc field. Thus, we observed clear field-induced slow magnetic relaxation of [Y1.4Gd0.6Pt3(H2O)2(SAc)12] up to 36 K. The relaxation process was determined to be a direct process.

AB - Heterometallic Gd−Pt complexes ([Gd2Pt3(H2O)2(SAc)12] (SAc=thioacetate), [Y1.4Gd0.6Pt3(H2O)2(SAc)12], and [Gd2Pt3(H2O)6(SAc)12]⋅7 H2O have been synthesized. The crystal structures and DFT calculations indicated a Gd−Pt heretometallic bond. Single-crystal ESR spectra determined the direction of magnetic anisotropy as direction of the Gd−Pt bond. In other words, the Gd−Pt bond dictates the direction of magnetic anisotropy. The heterometallic Gd−Pt bond lowers the symmetry of the Gd ion, splitting the Kramers doublet in a dc field. Thus, we observed clear field-induced slow magnetic relaxation of [Y1.4Gd0.6Pt3(H2O)2(SAc)12] up to 36 K. The relaxation process was determined to be a direct process.

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