Triangulo-{ErIII3} complex showing field supported slow magnetic relaxation

Mamo Gebrezgiabher; Sören Schlittenhardt; Cyril Rajnák; Juraj Kuchár; Assefa Sergawie; Juraj Černák; Mario Ruben; Madhu Thomas; Roman Boča

doi:10.1039/D2RA04328A

Triangulo-{Er^III₃} complex showing field supported slow magnetic relaxation†

Mamo Gebrezgiabher,

^ab Sören Schlittenhardt,

^c Cyril Rajnák,

^b Juraj Kuchár,

^d Assefa Sergawie,

^a Juraj Černák,

^d Mario Ruben,^cef Madhu Thomas

*^a and Roman Boča

*^b

Author affiliations

* Corresponding authors

^a Department of Industrial Chemistry, College of Applied Sciences, Nanotechnology Excellence Center, Addis Ababa Science and Technology University, Addis Ababa P.O. Box 16417, Ethiopia
E-mail: madhu.thomas@aastu.edu.et

^b Department of Chemistry, Faculty of Natural Sciences, University of SS Cyril and Methodius, 91701 Trnava, Slovakia
E-mail: roman.boca@ucm.sk

^c Institute of Nanotechnology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany

^d Department of Inorganic Chemistry, Institute of Chemistry, P. J. Šafárik University in Košice, 041 80 Košice, Slovakia

^e Institute of Quantum Materials and Technologies (IQMT, ), Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany

^f Centre Européen de Science Quantique (CESQ), Institut de Science et d’Ingénierie Supramoléculaires (ISIS, UMR 7006), CNRS-Université de Strasbourg, 8 allée Gaspard Monge BP 70028 67083, Strasbourg Cedex, France

Abstract

The triangulo-{Er₃} complex [Er₃Cl(o-van)₃(OH)₂(H₂O)₅]Cl₃·nH₂O (n = 9.4; H(o-van) = o-vanillin) (1) was generated by an in situ method. The isolated Er(III) complex 1 was characterized by elemental analysis and molecular spectroscopy. The results of single crystal X-ray diffraction studies have shown that 1 is built up of trinuclear [Er₃Cl(o-van)₃(OH)₂(H₂O)₅]³⁺ complex cations, chloride anions and water solvate molecules. Within the complex cation the three Er(III) central atoms are placed at the apexes of a triangle which are bridged by three (o-van)⁻ ligands with additional chelating functions and two μ₃-OH⁻ ligands. Additionally five aqua and one chlorido ligands complete the octa-coordination of the three Er(III) atoms. AC susceptibility measurements reveal that the compound exhibits slow magnetic relaxation with two relaxation modes.

Supplementary files

Article information

DOI: https://doi.org/10.1039/D2RA04328A
Article type: Paper
Submitted: 13 Jul 2022
Accepted: 18 Jul 2022
First published: 04 Aug 2022
This article is Open Access

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RSC Adv., 2022,12, 21674-21680

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Triangulo-{Er^III₃} complex showing field supported slow magnetic relaxation

M. Gebrezgiabher, S. Schlittenhardt, C. Rajnák, J. Kuchár, A. Sergawie, J. Černák, M. Ruben, M. Thomas and R. Boča, RSC Adv., 2022, 12, 21674 DOI: 10.1039/D2RA04328A

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