Hexanuclear [Cp*Dy]6 single-molecule magnet

Jianfeng Wu; Serhiy Demeshko; Sebastian Dechert; Franc Meyer

doi:10.1039/C9CC09774K

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Hexanuclear **[Cp*Dy]₆** single-molecule magnet†

Jianfeng Wu,^ab Serhiy Demeshko,^a Sebastian Dechert^a and Franc Meyer

*^a

Author affiliations

* Corresponding authors

^a Universität Göttingen, Institut für Anorganische Chemie, Tammannstr. 4, D-37077 Göttingen, Germany
E-mail: franc.meyer@chemie.uni-goettingen.de

^b Sino-German Joint Research Lab for Space Biomaterials and Translational Technology, School of Life Sciences, Northwestern Polytechnical University, Xi’an, P. R. China

Abstract

A hexanuclear cluster [(Cp*Dy)₆K₄Cl₁₆(THF)₆], [Cp*Dy]₆, has been constructed from six {Cp*Dy^III} synthons in which the strongly coordinating Cp*⁻ caps determine the local anisotropy axes. Structural characterization of [Cp*Dy]₆ shows two almost parallel triangular (Cp*Dy)₃ fragments that are linked by the K⁺ and Cl⁻ ions. Magnetic measurements reveal slow thermal relaxation and fast quantum tunneling relaxation in the absence of an external dc field. After applying a weak dc field, the quantum tunneling relaxation is efficiently suppressed, giving a sizable energy barrier of 561 K, which represents the current record energy barrier for high nuclearity organometallic SMMs.

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Article information

DOI: https://doi.org/10.1039/C9CC09774K
Article type: Communication
Submitted: 16 Dec 2019
Accepted: 27 Feb 2020
First published: 27 Feb 2020
This article is Open Access

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Chem. Commun., 2020,56, 3887-3890

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Hexanuclear **[Cp*Dy]₆** single-molecule magnet

J. Wu, S. Demeshko, S. Dechert and F. Meyer, Chem. Commun., 2020, 56, 3887 DOI: 10.1039/C9CC09774K

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