A {Gd(12)Na(6)} Molecular Quadruple-Wheel with a Record Magnetocaloric Effect at Low Magnetic Fields and Temperatures

[Image: see text] Reaction of Gd(OAc)(3)·4H(2)O, salicylaldehyde and CH(3)ONa in MeCN/MeOH affords [Gd(12)Na(6)(OAc)(25)(HCO(2))(5)(CO(3))(6)(H(2)O)(12)]·9H(2)O.0.5MeCN (1·9H(2)O.0.5MeCN), whose structure describes a quadruple-wheel consisting of two {Na(3)} and two {Gd(6)} rings. The magnetic prope...

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Autores principales: Tziotzi, Thomais G., Gracia, David, Dalgarno, Scott J., Schnack, Jürgen, Evangelisti, Marco, Brechin, Euan K., Milios, Constantinos J.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2023
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10103126/
https://www.ncbi.nlm.nih.gov/pubmed/37010322
http://dx.doi.org/10.1021/jacs.3c01610
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author Tziotzi, Thomais G.
Gracia, David
Dalgarno, Scott J.
Schnack, Jürgen
Evangelisti, Marco
Brechin, Euan K.
Milios, Constantinos J.
author_facet Tziotzi, Thomais G.
Gracia, David
Dalgarno, Scott J.
Schnack, Jürgen
Evangelisti, Marco
Brechin, Euan K.
Milios, Constantinos J.
author_sort Tziotzi, Thomais G.
collection PubMed
description [Image: see text] Reaction of Gd(OAc)(3)·4H(2)O, salicylaldehyde and CH(3)ONa in MeCN/MeOH affords [Gd(12)Na(6)(OAc)(25)(HCO(2))(5)(CO(3))(6)(H(2)O)(12)]·9H(2)O.0.5MeCN (1·9H(2)O.0.5MeCN), whose structure describes a quadruple-wheel consisting of two {Na(3)} and two {Gd(6)} rings. The magnetic properties of 1 reveal very weak antiferromagnetic interactions between the Gd(III) ions, which give rise to a record magnetocaloric effect at low applied magnetic fields and low temperatures. The magnetic entropy change reaches −ΔS(m)= 29.3 J kg(–1) K(–1) for full demagnetization from B = 1 T at T = 0.5 K.
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spelling pubmed-101031262023-04-15 A {Gd(12)Na(6)} Molecular Quadruple-Wheel with a Record Magnetocaloric Effect at Low Magnetic Fields and Temperatures Tziotzi, Thomais G. Gracia, David Dalgarno, Scott J. Schnack, Jürgen Evangelisti, Marco Brechin, Euan K. Milios, Constantinos J. J Am Chem Soc [Image: see text] Reaction of Gd(OAc)(3)·4H(2)O, salicylaldehyde and CH(3)ONa in MeCN/MeOH affords [Gd(12)Na(6)(OAc)(25)(HCO(2))(5)(CO(3))(6)(H(2)O)(12)]·9H(2)O.0.5MeCN (1·9H(2)O.0.5MeCN), whose structure describes a quadruple-wheel consisting of two {Na(3)} and two {Gd(6)} rings. The magnetic properties of 1 reveal very weak antiferromagnetic interactions between the Gd(III) ions, which give rise to a record magnetocaloric effect at low applied magnetic fields and low temperatures. The magnetic entropy change reaches −ΔS(m)= 29.3 J kg(–1) K(–1) for full demagnetization from B = 1 T at T = 0.5 K. American Chemical Society 2023-04-03 /pmc/articles/PMC10103126/ /pubmed/37010322 http://dx.doi.org/10.1021/jacs.3c01610 Text en © 2023 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by/4.0/Permits the broadest form of re-use including for commercial purposes, provided that author attribution and integrity are maintained (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Tziotzi, Thomais G.
Gracia, David
Dalgarno, Scott J.
Schnack, Jürgen
Evangelisti, Marco
Brechin, Euan K.
Milios, Constantinos J.
A {Gd(12)Na(6)} Molecular Quadruple-Wheel with a Record Magnetocaloric Effect at Low Magnetic Fields and Temperatures
title A {Gd(12)Na(6)} Molecular Quadruple-Wheel with a Record Magnetocaloric Effect at Low Magnetic Fields and Temperatures
title_full A {Gd(12)Na(6)} Molecular Quadruple-Wheel with a Record Magnetocaloric Effect at Low Magnetic Fields and Temperatures
title_fullStr A {Gd(12)Na(6)} Molecular Quadruple-Wheel with a Record Magnetocaloric Effect at Low Magnetic Fields and Temperatures
title_full_unstemmed A {Gd(12)Na(6)} Molecular Quadruple-Wheel with a Record Magnetocaloric Effect at Low Magnetic Fields and Temperatures
title_short A {Gd(12)Na(6)} Molecular Quadruple-Wheel with a Record Magnetocaloric Effect at Low Magnetic Fields and Temperatures
title_sort {gd(12)na(6)} molecular quadruple-wheel with a record magnetocaloric effect at low magnetic fields and temperatures
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10103126/
https://www.ncbi.nlm.nih.gov/pubmed/37010322
http://dx.doi.org/10.1021/jacs.3c01610
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