A Trinuclear Radical‐Bridged Lanthanide Single‐Molecule Magnet
Abstract
Abstract Assembly of the triangular, organic radical‐bridged complexes Cp* 6 Ln 3 (μ 3 ‐HAN) (Cp*=pentamethylcyclopentadienyl; Ln=Gd, Tb, Dy; HAN=hexaazatrinaphthylene) proceeds through the reaction of Cp* 2 Ln(BPh 4 ) with HAN under strongly reducing conditions. Significantly, magnetic susceptibility measurements of these complexes support effective magnetic coupling of all three Ln III centers through the HAN 3−. radical ligand. Thorough investigation of the Dy III congener through both ac susceptibility and dc magnetic relaxation measurements reveals slow relaxation of the magnetization, with an effective thermal relaxation barrier of U eff =51 cm −1 . Magnetic coupling in the Dy III complex enables a large remnant magnetization at temperatures up to 3.0 K in the magnetic hysteresis measurements and hysteresis loops that are open at zero‐field up to 3.5 K.
- Authors:
-
- Department of Chemistry University of California, Berkeley Berkeley CA 94720 USA
- Institut für Anorganische Chemie Georg-August-Universität Göttingen Tammannstrasse 4 37077 Göttingen Germany
- Department of Chemistry University of California, Berkeley Berkeley CA 94720 USA, Department of Chemical and Biomolecular Engineering University of California, Berkeley and Materials Sciences Division, Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
- Publication Date:
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1374467
- Resource Type:
- Publisher's Accepted Manuscript
- Journal Name:
- Angewandte Chemie (International Edition)
- Additional Journal Information:
- Journal Name: Angewandte Chemie (International Edition) Journal Volume: 56 Journal Issue: 34; Journal ID: ISSN 1433-7851
- Publisher:
- Wiley Blackwell (John Wiley & Sons)
- Country of Publication:
- Germany
- Language:
- English
Citation Formats
Gould, Colin A., Darago, Lucy E., Gonzalez, Miguel I., Demir, Selvan, and Long, Jeffrey R. A Trinuclear Radical‐Bridged Lanthanide Single‐Molecule Magnet. Germany: N. p., 2017.
Web. doi:10.1002/anie.201612271.
Gould, Colin A., Darago, Lucy E., Gonzalez, Miguel I., Demir, Selvan, & Long, Jeffrey R. A Trinuclear Radical‐Bridged Lanthanide Single‐Molecule Magnet. Germany. https://doi.org/10.1002/anie.201612271
Gould, Colin A., Darago, Lucy E., Gonzalez, Miguel I., Demir, Selvan, and Long, Jeffrey R. Fri .
"A Trinuclear Radical‐Bridged Lanthanide Single‐Molecule Magnet". Germany. https://doi.org/10.1002/anie.201612271.
@article{osti_1374467,
title = {A Trinuclear Radical‐Bridged Lanthanide Single‐Molecule Magnet},
author = {Gould, Colin A. and Darago, Lucy E. and Gonzalez, Miguel I. and Demir, Selvan and Long, Jeffrey R.},
abstractNote = {Abstract Assembly of the triangular, organic radical‐bridged complexes Cp* 6 Ln 3 (μ 3 ‐HAN) (Cp*=pentamethylcyclopentadienyl; Ln=Gd, Tb, Dy; HAN=hexaazatrinaphthylene) proceeds through the reaction of Cp* 2 Ln(BPh 4 ) with HAN under strongly reducing conditions. Significantly, magnetic susceptibility measurements of these complexes support effective magnetic coupling of all three Ln III centers through the HAN 3−. radical ligand. Thorough investigation of the Dy III congener through both ac susceptibility and dc magnetic relaxation measurements reveals slow relaxation of the magnetization, with an effective thermal relaxation barrier of U eff =51 cm −1 . Magnetic coupling in the Dy III complex enables a large remnant magnetization at temperatures up to 3.0 K in the magnetic hysteresis measurements and hysteresis loops that are open at zero‐field up to 3.5 K.},
doi = {10.1002/anie.201612271},
journal = {Angewandte Chemie (International Edition)},
number = 34,
volume = 56,
place = {Germany},
year = {Fri Feb 03 00:00:00 EST 2017},
month = {Fri Feb 03 00:00:00 EST 2017}
}
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