Field‐Induced Slow Magnetic Relaxation of GdIII Complex with a Pt−Gd Heterometallic Bond. Issue 19 (20th March 2017)

• Record Type: Journal Article
• Authors: Yoshida, Takefumi; Cosquer, Goulven; Izuogu, David Chukwuma; Ohtsu, Hiroyoshi; Kawano, Masaki; Lan, Yanhua; Wernsdorfer, Wolfgang; Nojiri, Hiroyuki; Breedlove, Brian K.; Yamashita, Masahiro
• Is Part Of: Chemistry. Volume 23:Issue 19(2017)
• Page Start: 4551
• Page End: 4556
• Publication Date: 2017-03-20
• Subjects: gadolinium -- heterometallic bond -- magnetic properties -- slow magnetic relaxation -- thioacetate; Chemistry -- Periodicals; 540
• DOI: 10.1002/chem.201700886
• Languages: English
• ISSNs: 0947-6539

Abstract

Abstract: Heterometallic Gd−Pt complexes ([Gd2 Pt3 (H2 O)2 (SAc)12 ] (SAc=thioacetate), [Y1.4 Gd0.6 Pt3 (H2 O)2 (SAc)12 ], and [Gd2 Pt3 (H2 O)6 (SAc)12 ]⋅7 H2 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 [Y1.4 Gd0.6 Pt3 (H2 O)2 (SAc)12 ] up to 36 K. The relaxation process was determined to be a direct process. Abstract : Relax and go slow ! A new strategy is reported in which a diamagnetic Pt ion was used as a ligand on a Gd ion to bring about SMM‐like behavior in a Gd complex. The heterometallic Gd−Pt bond lowers the symmetry of the Gd ion, splitting the Kramers doublet in a dc field. Thus, the complexes should undergo slow magnetic relaxation.