Field induced slow magnetic relaxation in a zig-zag chain-like Dy(III) complex with the ligand o-phenylenedioxydiacetato

Juraj Černák; Katarína Harčárová; Larry R. Falvello; Ľubor Dlháň; Ján Titiš; Roman Boča

doi:10.1039/D0NJ02276D

Field induced slow magnetic relaxation in a zig-zag chain-like Dy(iii) complex with the ligand o-phenylenedioxydiacetato†

Juraj Černák,

*^a Katarína Harčárová,‡^a Larry R. Falvello,

^b Ľubor Dlháň,^c Ján Titiš

^d and Roman Boča

Author affiliations

* Corresponding authors

^a Department of Inorganic Chemistry, Faculty of Sciences, P. J. Šafárik University in Košice, Moyzesova 11, 041 54 Košice, Slovakia
E-mail: juraj.cernak@upjs.sk

^b Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón (ICMA), University of Zaragoza-CSIC, Pedro Cerbuna 12, E-50009 Zaragoza, Spain

^c Institute of Inorganic Chemistry, Slovak University of Technology, Radlinského 9, 812 37 Bratislava, Slovakia

^d Department of Chemistry, Faculty of Natural Sciences, University of SS Cyril and Methodius, nám. J. Herdu 2, 917 01 Trnava, Slovakia

Abstract

The new complex [Dy(PDOA)(NO₃)(H₂O)₂]_n·nH₂O (1) (H₂PDOA is o-phenylenedioxydiacetic acid) was isolated from the reaction of dysprosium(III) nitrate and H₂PDOA in a 1 : 1 molar ratio. Its crystal structure is formed of neutral zig-zag chains in which the nona-coordinated Dy(III) atoms (O₉ donor set) are linked by PDOA ligands with a chelating-bridging coordination mode. DC and AC magnetic studies revealed that 1 behaves as a field-induced SMM with three relaxation channels. The derived values, considering the Orbach relaxation process, of the barrier to spin reversal and the extrapolated relaxation time are U/k_B = 59.5 K and τ₀ = 6.3 × 10⁻¹⁰ s, respectively. Ab initio calculations support the experimental results.

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DOI: https://doi.org/10.1039/D0NJ02276D
Article type: Paper
Submitted: 05 May 2020
Accepted: 15 Jul 2020
First published: 23 Jul 2020

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New J. Chem., 2020,44, 13458-13465

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Field induced slow magnetic relaxation in a zig-zag chain-like Dy(III) complex with the ligand o-phenylenedioxydiacetato

J. Černák, K. Harčárová, L. R. Falvello, Ľ. Dlháň, J. Titiš and R. Boča, New J. Chem., 2020, 44, 13458 DOI: 10.1039/D0NJ02276D

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New Journal of Chemistry

Field induced slow magnetic relaxation in a zig-zag chain-like Dy(iii) complex with the ligand o-phenylenedioxydiacetato†

Abstract

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Field induced slow magnetic relaxation in a zig-zag chain-like Dy(III) complex with the ligand o-phenylenedioxydiacetato

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