146902 20260217205519.0 doi 10.3389/fchem.2024.1494609 sideral 140722 ART-2024-140722 eng Agapaki, Eleftheria Magnetocaloric effect in a high-spin ferromagnetic molecular cluster 2024 Access copy available to the general public Unrestricted The reaction of MnCl2·4H2O with HL ((1-methyl-1H-imidazol-2-yl)methanol) and pdH2 (1, 3 propanediol) in a basic MeCN solution results in the formation of a mixed-valence [Mn20] cationic cluster and two [MnIICl4] counter anions. The metallic skeleton of the cluster describes two geometrically equivalent mixed-valent, linked [MnIII6MnII4] supertetrahedra in which nearest-neighbor metal ions have a different oxidation state. Magnetic susceptibility, magnetization data and heat capacity measurements support evidence of predominant ferromagnetic correlations, leading to a s = 22 spin ground state for the [MnIII6MnII4] supertetrahedra, which are pair-linked by a weak antiferromagnetic coupling. The properties are discussed in the context of the magnetocaloric effect and the potential application of this compound in cryogenic refrigeration. info:eu-repo/grantAgreement/ES/DGA/E11-23R info:eu-repo/grantAgreement/ES/DGA-FSE/E12-23R-RASMIA info:eu-repo/grantAgreement/ES/MICINN/PID2021-124734OB-C21 info:eu-repo/semantics/openAccess by https://creativecommons.org/licenses/by/4.0/deed.es 4.2 2024 CHEMISTRY, MULTIDISCIPLINARY 84 / 239 = 0.351 2024 Q2 T2 0.83 2024 Chemistry (miscellaneous) 2024 Q1 8.4 2024 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Charkiolakis, Emmanouil K. Nichol, Gary S. Gracia, David Evangelisti, Marco (orcid)0000-0002-8028-9064 Brechin, Euan K. 12 (2024), 1494609 [8 pp.] Front. chem. Frontiers in Chemistry 2296-2646 2563782 http://zaguan.unizar.es/record/146902/files/texto_completo.pdf Versión publicada 2185614 http://zaguan.unizar.es/record/146902/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:146902 articulos driver 2026-02-17-20:28:13 ARTICLE