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Issue 44, 2020
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Two heads are better than one: improving magnetic relaxation in the dysprosium metallocene upon dimerization by use of an exceptionally weakly-coordinating anion

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Abstract

Partial metathesis between two weakly-coordinating anions in the archetypical dysprosium metallocene Image ID:d0cc01980a-t4.gif results in the first example of [BPh4] as a bridging ligand in 4f metals, with a unique η2222-bridge. Magnetic susceptibility and relaxation dynamics studies along with ab initio calculations reveal improved slow relaxation of the magnetization in Image ID:d0cc01980a-t19.gif over its mononuclear congener, resulting in an energy barrier of 490 K/340 cm−1 and waist-restricted hysteresis up to 6.5 K.

Graphical abstract: Two heads are better than one: improving magnetic relaxation in the dysprosium metallocene upon dimerization by use of an exceptionally weakly-coordinating anion

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Article information


Submitted
18 Mar 2020
Accepted
16 Apr 2020
First published
16 Apr 2020

Chem. Commun., 2020,56, 5937-5940
Article type
Communication

Two heads are better than one: improving magnetic relaxation in the dysprosium metallocene Image ID:d0cc01980a-t2.gif upon dimerization by use of an exceptionally weakly-coordinating anion

D. Errulat, B. Gabidullin, A. Mansikkamäki and M. Murugesu, Chem. Commun., 2020, 56, 5937
DOI: 10.1039/D0CC01980A

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