Closing the Circle of the Lanthanide-Murexide Series: Single-Molecule Magnet Behavior and Near-Infrared Emission of the NdIII Derivative
Gang Huang, Guillaume Calvez
, Yan Suffren, Carole Daiguebonne, Stéphane Freslon, Olivier Guillou and Kevin Bernot *
, Yan Suffren, Carole Daiguebonne, Stéphane Freslon, Olivier Guillou and Kevin Bernot *
Univ Rennes, INSA Rennes, CNRS, UMR 6226 (Institut des Sciences Chimiques de Rennes), F-35000 Rennes, France
*
Author to whom correspondence should be addressed.
Magnetochemistry 2018, 4(4), 44; https://doi.org/10.3390/magnetochemistry4040044
Received: 18 July 2018 / Revised: 19 September 2018 / Accepted: 21 September 2018 / Published: 3 October 2018
(This article belongs to the Special Issue Multifunctional Molecule-based Magnetic Materials)
Abstract
Up to now, even if murexide-based complexometric studies are performed with all 3d or 4f ions, the crystal structures of the light-lanthanide derivatives of the lanthanide-murexide series are unknown. In this work, we report the crystal structure of the NdIII derivative named NdMurex. Contrary to all known complexes of the 3d or 4f series, a dimeric compound was obtained. As for its already reported DyIII and YbIII parents, the NdIII complex responsible for the color-change behaves as a single-molecule magnet (SMM). This behavior was observed on both the crystalline (NdMurex: Ueff = 6.20(0.80) K, 4.31 cm−1; τ0 = 2.20(0.92) × 10−5 s, Hdc = 1200 Oe) and anhydrous form (NdMurexAnhy: Ueff = 6.25(0.90) K, 4.34 cm−1; τ0 = 4.85(0.40) × 10−5 s, Hdc = 1200 Oe). The SMM behavior is reported also for the anhydrous CeIII derivative (CeMurexAnhy: Ueff = 5.40(0.75) K, 3.75 cm−1; τ0 = 3.02(1.10) × 10−5 s, Hdc = 400 Oe). The Near-Infrared Emission NIR emission was observed for NdMurexAnhy and highlights its bifunctionality. View Full-Text
Graphical abstract
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Huang, G.; Calvez, G.; Suffren, Y.; Daiguebonne, C.; Freslon, S.; Guillou, O.; Bernot, K. Closing the Circle of the Lanthanide-Murexide Series: Single-Molecule Magnet Behavior and Near-Infrared Emission of the NdIII Derivative. Magnetochemistry 2018, 4, 44.
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