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Switching on thermal and light-induced spin crossover by desolvation of [Fe(3-bpp)2](XO4)2·solvent (X = Cl, Re) compounds

hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
hal.structure.identifierResearch Unit of Medicinal Plants [RUMP]
dc.contributor.authorDJEMEL, Abdelhak
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
hal.structure.identifierDepartment of Chemistry [Tokyo]
dc.contributor.authorSTEFANCZYK, Olaf
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorDESPLANCHES, Cédric
hal.structure.identifierDepartment of Chemistry [Tokyo]
dc.contributor.authorKUMAR, Kunal
hal.structure.identifierLaboratory of Water Treatment and Valorization of Industrial Wastes
dc.contributor.authorDELIMI, Rachid
hal.structure.identifierResearch Unit of Medicinal Plants [RUMP]
dc.contributor.authorBENACEUR, Farouk
hal.structure.identifierDepartment of Chemistry [Tokyo]
dc.contributor.authorOHKOSHI, Shin-Ichi
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorCHASTANET, Guillaume
dc.date.issued2021-06-29
dc.identifier.issn2052-1553
dc.description.abstractEnThermal desolvation is a very attractive method for the post-synthetic modification of the physicochemical properties of switchable materials. In this field of research, special attention has been paid to the possibility of modifying the thermo- and photo-induced spin crossover (SCO) properties of metal complexes as they can act as solvent sensors. Two new [Fe(3-bpp)2](ClO4)2·2.5H2O·MeOH (1·sol) and [Fe(3-bpp)2](ReO4)2·3H2O (2·sol) compounds, where 3-bpp is 2,6-di-(1H-pyrazol-3-yl)pyridine, were prepared and structurally characterized, and their solvated and desolvated phases were additionally investigated spectroscopically, magnetically and photomagnetically. Single-crystal X-ray structures of 1·sol and 2·sol consist of similar [Fe(3-bpp)2]2+ units arranged in π–π stacked layers separated by H-bond-stabilised layers consisting of solvent molecules and anions. Moreover, both materials show desolvation-assisted SCO from a low (LS, S = 0) to high-spin state (HS, S = 2) at around 340 K, followed by a reversible gradual spin conversion with T1/2 ≈ 210 K and 304 K for 1 and 2, respectively. Photomagnetic studies of 1·sol and 1 confirmed the efficiency of the light-induced excited spin-state trapping (LIESST) phenomenon with relaxation temperatures T(LIESST) = 82 K and 66 K for the solvated and desolvated phases, respectively. In the case of 2·sol, no LIESST effect was observed while the desolvated phase 2 exhibits a LIESST behaviour at T(LIESST) ≈ 50 K.
dc.description.sponsorshipBistabilité magnétique dans de nouveaux systèmes moléculaires à base de ligands anioniques pontants - ANR-12-BS07-0030
dc.description.sponsorshipEtude femtoseconde rayons X et optique de la dynamique ultrarapide de photocommutation de matériaux moléculaires magnétiques - ANR-13-BS04-0002
dc.language.isoen
dc.publisherRoyal Society of Chemistry
dc.title.enSwitching on thermal and light-induced spin crossover by desolvation of [Fe(3-bpp)2](XO4)2·solvent (X = Cl, Re) compounds
dc.typeArticle de revue
dc.identifier.doi10.1039/d1qi00446h
dc.subject.halChimie/Matériaux
bordeaux.journalInorganic Chemistry Frontiers
bordeaux.page3210-3221
bordeaux.volume8
bordeaux.issue13
bordeaux.peerReviewedoui
hal.identifierhal-03284346
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03284346v1
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