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Field‐Induced Slow Magnetic Relaxation of Gd<sup>III</sup> Complex with a Pt−Gd Heterometallic Bond

DOI

38

Citations

37

References

2017

Year

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

Abstract

Heterometallic Gd-Pt complexes ([Gd<sub>2</sub> Pt<sub>3</sub> (H<sub>2</sub> O)<sub>2</sub> (SAc)<sub>12</sub> ] (SAc=thioacetate), [Y<sub>1.4</sub> Gd<sub>0.6</sub> Pt<sub>3</sub> (H<sub>2</sub> O)<sub>2</sub> (SAc)<sub>12</sub> ], and [Gd<sub>2</sub> Pt<sub>3</sub> (H<sub>2</sub> O)<sub>6</sub> (SAc)<sub>12</sub> ]⋅7 H<sub>2</sub> O 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<sub>1.4</sub> Gd<sub>0.6</sub> Pt<sub>3</sub> (H<sub>2</sub> O)<sub>2</sub> (SAc)<sub>12</sub> ] up to 36 K. The relaxation process was determined to be a direct process.

References

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