000146902 001__ 146902 000146902 005__ 20260217205519.0 000146902 0247_ $$2doi$$a10.3389/fchem.2024.1494609 000146902 0248_ $$2sideral$$a140722 000146902 037__ $$aART-2024-140722 000146902 041__ $$aeng 000146902 100__ $$aAgapaki, Eleftheria 000146902 245__ $$aMagnetocaloric effect in a high-spin ferromagnetic molecular cluster 000146902 260__ $$c2024 000146902 5060_ $$aAccess copy available to the general public$$fUnrestricted 000146902 5203_ $$aThe 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. 000146902 536__ $$9info:eu-repo/grantAgreement/ES/DGA/E11-23R$$9info:eu-repo/grantAgreement/ES/DGA-FSE/E12-23R-RASMIA$$9info:eu-repo/grantAgreement/ES/MICINN/PID2021-124734OB-C21 000146902 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttps://creativecommons.org/licenses/by/4.0/deed.es 000146902 590__ $$a4.2$$b2024 000146902 592__ $$a0.83$$b2024 000146902 591__ $$aCHEMISTRY, MULTIDISCIPLINARY$$b84 / 239 = 0.351$$c2024$$dQ2$$eT2 000146902 593__ $$aChemistry (miscellaneous)$$c2024$$dQ1 000146902 594__ $$a8.4$$b2024 000146902 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion 000146902 700__ $$aCharkiolakis, Emmanouil K. 000146902 700__ $$aNichol, Gary S. 000146902 700__ $$aGracia, David 000146902 700__ $$0(orcid)0000-0002-8028-9064$$aEvangelisti, Marco 000146902 700__ $$aBrechin, Euan K. 000146902 773__ $$g12 (2024), 1494609 [8 pp.]$$pFront. chem.$$tFrontiers in Chemistry$$x2296-2646 000146902 8564_ $$s2563782$$uhttps://zaguan.unizar.es/record/146902/files/texto_completo.pdf$$yVersión publicada 000146902 8564_ $$s2185614$$uhttps://zaguan.unizar.es/record/146902/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada 000146902 909CO $$ooai:zaguan.unizar.es:146902$$particulos$$pdriver 000146902 951__ $$a2026-02-17-20:28:13 000146902 980__ $$aARTICLE