000062079 001__ 62079
000062079 005__ 20190709135440.0
000062079 0247_ $$2doi$$a10.1039/c7dt02281f
000062079 0248_ $$2sideral$$a101153
000062079 037__ $$aART-2017-101153
000062079 041__ $$aeng
000062079 100__ $$aHooper, T.N.
000062079 245__ $$aComing full circle: Constructing a [Gd6] wheel dimer by dimer and the importance of spin topology
000062079 260__ $$c2017
000062079 5060_ $$aAccess copy available to the general public$$fUnrestricted
000062079 5203_ $$aThe syntheses, structures, magnetic and thermodynamic properties of three related triethanolamine-based GdIII complexes are described. The smallest, a dimer ([Gd2]), can be viewed as the subunit from which the two larger complexes, a linear tetramer ([Gd2]2) and a cyclic hexamer ([Gd2]3), are composed by further deprotonation of the triethanolamine ligand. In all cases, nearest neighbour magnetic ions are weakly correlated by antiferromagnetic isotropic exchange, whose strength does not change significantly from one complex to another; J ranging from -0.10 to -0.13 cm-1. Therefore, rather than the strength of the coupling, it is the spin topology that is the dominant factor in determining the differences between the physical properties-specifically, the nuclearity and the transition from open (dimer and tetramer) to cyclic (hexamer) boundary conditions. Indeed the hexanuclear wheel reaches the continuum limit of classical Heisenberg spin chains. In terms of the magnetocaloric properties, the smaller the nuclearity, the larger the magnetic entropy and adiabatic temperature changes.
000062079 536__ $$9info:eu-repo/grantAgreement/ES/MINECO/CTQ2015-64579-C3-1-P$$9info:eu-repo/grantAgreement/ES/MINECO-FEDER/MAT2015-68204-R
000062079 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/
000062079 590__ $$a4.099$$b2017
000062079 591__ $$aCHEMISTRY, INORGANIC & NUCLEAR$$b6 / 45 = 0.133$$c2017$$dQ1$$eT1
000062079 592__ $$a1.306$$b2017
000062079 593__ $$aInorganic Chemistry$$c2017$$dQ1
000062079 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000062079 700__ $$aLangley, S.K.
000062079 700__ $$aGómez-Coca, S.
000062079 700__ $$0(orcid)0000-0002-4078-6808$$aLorusso, G.
000062079 700__ $$aRuiz, E.
000062079 700__ $$aMurray, K.S.
000062079 700__ $$0(orcid)0000-0002-8028-9064$$aEvangelisti, M.$$uUniversidad de Zaragoza
000062079 700__ $$aBrechin, E.K.
000062079 7102_ $$12003$$2395$$aUniversidad de Zaragoza$$bDpto. Física Materia Condensa.$$cÁrea Física Materia Condensada
000062079 773__ $$g46, 31 (2017), 10255-10263$$pDalton Trans.$$tDalton Transactions$$x1477-9226
000062079 8564_ $$s2580558$$uhttps://zaguan.unizar.es/record/62079/files/texto_completo.pdf$$yVersión publicada
000062079 8564_ $$s110380$$uhttps://zaguan.unizar.es/record/62079/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000062079 909CO $$ooai:zaguan.unizar.es:62079$$particulos$$pdriver
000062079 951__ $$a2019-07-09-11:36:06
000062079 980__ $$aARTICLE