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Complexities in the Molecular Spin Crossover Transition

hal.structure.identifierDepartment of Physics and Astronomy
dc.contributor.authorZHANG, Xin
hal.structure.identifierDepartment of Physics and Astronomy
dc.contributor.authorMU, Sai
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorCHASTANET, Guillaume
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorDARO, Nathalie
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorPALAMARCIUC, Tatiana
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorROSA, Patrick
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorLÉTARD, Jean-François
hal.structure.identifierDepartment of Chemical Engineering
hal.structure.identifierNational Synchrotron Light Source
dc.contributor.authorLIU, Jing
hal.structure.identifierNational Synchrotron Light Source
dc.contributor.authorSTERBINSKY, George E.
hal.structure.identifierNational Synchrotron Light Source
dc.contributor.authorARENA, Dario A.
hal.structure.identifierInstitut de Physique et Chimie des Matériaux de Strasbourg [IPCMS]
dc.contributor.authorETRILLARD, Céline
hal.structure.identifierInstitut de Physique et Chimie des Matériaux de Strasbourg [IPCMS]
dc.contributor.authorKUNDYS, Bohdan
hal.structure.identifierInstitut de Physique et Chimie des Matériaux de Strasbourg [IPCMS]
dc.contributor.authorDOUDIN, Bernard
hal.structure.identifierDepartment of Physics and Astronomy
dc.contributor.authorDOWBEN, Peter A.
dc.date.issued2015
dc.identifier.issn1932-7447
dc.description.abstractEnVariable-temperature studies of the electronic structures of four different Fe(II) spin crossover molecules, [Fe(H2B(pz)2)2(bipy)] (pz = pyrazol-1-yl, bipy = 2,2′-bipyridine), [Fe(H2B(pz)2)2(phen)], [Fe(phen)2(NCS)2] (phen = 9,10-phenantroline), and [Fe(PM-AzA)2(NCS)2] (PM-AzA = 4-phenyldiazenyl-N-(pyridin-2-ylmethylene)aniline) by X-ray absorption spectroscopy (XAS), combined with electrical properties studies of the [Fe(PM-AzA)2(NCS)2] single crystal are presented. We show that both the XAS signature of the spin state of powdered samples and the dielectric permittivity of the [Fe(PM-AzA)2(NCS)2] single crystal change at significantly lower temperatures than the magnetometry, structure, and resistivity indicators of a spin crossover transition. The changes in electronic structure are in agreement with the expectations from density functional theory (DFT) results for the different molecular electronic structures associated with the high-spin and low-spin states. These findings suggest that the electronic structure phase ordering process does not simply follow the spin transition.
dc.description.sponsorshipÉléments de mémoires multifonctionnels utilisant des connections supramoléculaires auto assemblées
dc.language.isoen
dc.publisherAmerican Chemical Society
dc.subject.enmolecular spin crossover transitions
dc.subject.enelectronic structure changes
dc.subject.enX-ray absorption spectroscopy
dc.title.enComplexities in the Molecular Spin Crossover Transition
dc.typeArticle de revue
dc.identifier.doi10.1021/acs.jpcc.5b02220
dc.subject.halChimie/Chimie de coordination
dc.subject.halChimie/Chimie théorique et/ou physique
bordeaux.journalJournal of Physical Chemistry C
bordeaux.page16293-16302
bordeaux.volume119
bordeaux.issue28
bordeaux.peerReviewedoui
hal.identifierhal-01180480
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01180480v1
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