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Hidden hysteretic behavior of a paramagnetic iron(II) network revealed by light irradiation

hal.structure.identifierChimie, Electrochimie Moléculaires et Chimie Analytique [CEMCA]
dc.contributor.authorMGUENAR NDIAYE, Mame
hal.structure.identifierCristallographie, Résonance Magnétique et Modélisations [CRM2]
dc.contributor.authorPILLET, Sébastien
hal.structure.identifierCristallographie, Résonance Magnétique et Modélisations [CRM2]
dc.contributor.authorBENDEIF, El-Eulmi
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorMARCHIVIE, Mathieu
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorCHASTANET, Guillaume
hal.structure.identifierGroupe d'Etude de la Matière Condensée [GEMAC]
dc.contributor.authorBOUKHEDDADEN, Kamel
hal.structure.identifierChimie, Electrochimie Moléculaires et Chimie Analytique [CEMCA]
dc.contributor.authorTRIKI, Smail
dc.date.issued2017-11-02
dc.identifier.issn1434-1948
dc.description.abstractEnThe paramagnetic coordination polymer [Fe(3phOH-trz){Pt(CN)4}].2H2O was obtained by reaction of iron(II) salt with the 4-(3-hydroxyphenyl)-1,2,4-triazole (3phOH-trz) ligand and a [Pt(CN)4]2- salt. Its structure consists in two dimensional {FePt(CN)4} layers linked by π-stacking interactions and a strong H-bonds network between water molecules and the hydroxyl group from the ligand. From the paramagnetic high spin (HS) state at 10 K, irradiation at 830 nm led to the fully low spin (LS) state, according to the reverse-LIESST process. Upon warming, this LS state undergoes a thermally induced spin transition to high spin around 105 K. This photoswitching process is reversible and the paramagnetic state can be recovered by a 510 nm light irradiation below 105 K. Moreover, a permanent irradiation (830 nm) revealed a hidden hysteresis loop of 37 K width. Photocrystallographic experiments did not evidence any structural phase transition upon excitation but underlined that the elastic frustration might be responsible for the inhibition of the spin crossover in this compound and allowed the observation of the hidden hysteresis loop.
dc.description.sponsorshipBistabilité magnétique dans de nouveaux systèmes moléculaires à base de ligands anioniques pontants
dc.description.sponsorshipIsite LUE
dc.language.isoen
dc.publisherWiley-VCH Verlag
dc.subject.enLIESST
dc.subject.enHidden hysteresis
dc.subject.enElastic frustration
dc.subject.enPhotomagnetism
dc.subject.enCoordination Chemistry
dc.subject.enIron(II)
dc.subject.enSpin-Crossover
dc.title.enHidden hysteretic behavior of a paramagnetic iron(II) network revealed by light irradiation
dc.typeArticle de revue
dc.identifier.doi10.1002/ejic.201701098
dc.subject.halChimie
dc.subject.halChimie/Chimie de coordination
dc.subject.halChimie/Matériaux
bordeaux.journalEuropean Journal of Inorganic Chemistry
bordeaux.page305-313
bordeaux.issue3-4
bordeaux.peerReviewedoui
hal.identifierhal-01629238
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01629238v1
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