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Hyperspectral Imaging as a Tool to Study Optical Anisotropy in Lanthanide-Based Molecular Single Crystals
Published on: April 14, 2020
Cinnamic acid derivative rare-earth dinuclear complexes and one-dimensional architectures: synthesis,
Ouafa Khalfaoui1, Adel Beghidja1, Jérôme Long2
1Unité de Recherche de Chimie de l'Environnement et Moléculaire Structurale (CHEMS), Université frères Mentouri Constantine, Route Aïn elbey, 25000 Constantine, Algeria. a_beghidja@yahoo.fr.
Abstract:
Discrete and extended architectures based on the association of lanthanide ions with two derivatives of cinnamic acid (2-methoxycinnamic acid and 3-methoxycinnamic acid) have been synthesized and characterized by IR spectroscopy, elemental analyses, X-ray diffraction and magnetic measurements. The use of the 2-methoxycinnamic ligand enables the synthesis of a series of dinuclear complexes (Ce3+ (1), Nd3+ (2), Gd3+ (3), Dy3+ (4)), while the presence of 3-methoxycinnamic acid induces the formation of one-dimensional coordination polymers (Ce3+ (5), Nd3+ (6), Dy3+ (7)). Investigations of the magnetic properties of the complexes reveal that they all exhibit field-induced slow relaxation of the magnetisation, mainly induced by Raman and direct relaxation processes.
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