A Low‐Symmetry Dysprosium Metallocene Single‐Molecule Magnet with a High Anisotropy Barrier

Thomas Pugh; Nicholas F. Chilton; Richard A. Layfield

doi:10.1002/anie.201604346

A Low‐Symmetry Dysprosium Metallocene Single‐Molecule Magnet with a High Anisotropy Barrier

Thomas Pugh, Nicholas F. Chilton, Richard A. Layfield

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162 Citations (Scopus)

Abstract

The single‐molecule magnet (SMM) properties of the isocarbonyl‐ligated dysprosium metallocene [Cp* 2 Dyμ‐(OC) 2 FeCp] 2 ( 1 Dy ), which contains a rhombus‐shaped Dy 2 Fe 2 core, are described. Combining a strong axial [Cp*] − ligand field with a weak equatorial field consisting of the isocarbonyl ligands leads to an anisotropy barrier of 662 cm −1 in zero applied field. The dominant thermal relaxation pathways in 1 Dy involves at least the fourth‐excited Kramers doublet, thus demonstrating that prominent SMM behavior can be observed for dysprosium in low‐symmetry environments.

Original language	English
Pages (from-to)	11082-11085
Number of pages	4
Journal	Angewandte Chemie - International Edition
Volume	55
Issue number	37
DOIs	https://doi.org/10.1002/anie.201604346
Publication status	Published - 27 Jul 2016
Externally published	Yes

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title = "A Low‐Symmetry Dysprosium Metallocene Single‐Molecule Magnet with a High Anisotropy Barrier",

abstract = "The single‐molecule magnet (SMM) properties of the isocarbonyl‐ligated dysprosium metallocene [Cp* 2 Dyμ‐(OC) 2 FeCp] 2 ( 1 Dy ), which contains a rhombus‐shaped Dy 2 Fe 2 core, are described. Combining a strong axial [Cp*] − ligand field with a weak equatorial field consisting of the isocarbonyl ligands leads to an anisotropy barrier of 662 cm −1 in zero applied field. The dominant thermal relaxation pathways in 1 Dy involves at least the fourth‐excited Kramers doublet, thus demonstrating that prominent SMM behavior can be observed for dysprosium in low‐symmetry environments.",

author = "Thomas Pugh and Chilton, {Nicholas F.} and Layfield, {Richard A.}",

year = "2016",

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journal = "Angewandte Chemie - International Edition",

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T1 - A Low‐Symmetry Dysprosium Metallocene Single‐Molecule Magnet with a High Anisotropy Barrier

AU - Pugh, Thomas

AU - Chilton, Nicholas F.

AU - Layfield, Richard A.

PY - 2016/7/27

Y1 - 2016/7/27

N2 - The single‐molecule magnet (SMM) properties of the isocarbonyl‐ligated dysprosium metallocene [Cp* 2 Dyμ‐(OC) 2 FeCp] 2 ( 1 Dy ), which contains a rhombus‐shaped Dy 2 Fe 2 core, are described. Combining a strong axial [Cp*] − ligand field with a weak equatorial field consisting of the isocarbonyl ligands leads to an anisotropy barrier of 662 cm −1 in zero applied field. The dominant thermal relaxation pathways in 1 Dy involves at least the fourth‐excited Kramers doublet, thus demonstrating that prominent SMM behavior can be observed for dysprosium in low‐symmetry environments.

AB - The single‐molecule magnet (SMM) properties of the isocarbonyl‐ligated dysprosium metallocene [Cp* 2 Dyμ‐(OC) 2 FeCp] 2 ( 1 Dy ), which contains a rhombus‐shaped Dy 2 Fe 2 core, are described. Combining a strong axial [Cp*] − ligand field with a weak equatorial field consisting of the isocarbonyl ligands leads to an anisotropy barrier of 662 cm −1 in zero applied field. The dominant thermal relaxation pathways in 1 Dy involves at least the fourth‐excited Kramers doublet, thus demonstrating that prominent SMM behavior can be observed for dysprosium in low‐symmetry environments.

U2 - 10.1002/anie.201604346

DO - 10.1002/anie.201604346

M3 - Article

SN - 1433-7851

VL - 55

SP - 11082

EP - 11085

JO - Angewandte Chemie - International Edition

JF - Angewandte Chemie - International Edition

IS - 37

ER -

A Low‐Symmetry Dysprosium Metallocene Single‐Molecule Magnet with a High Anisotropy Barrier

Abstract

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