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Varied spin crossover behaviour in a family of dinuclear Fe( ii ) triple helicate complexes

hal.structure.identifierSchool of Physical Chemical Sciences [Christchurch]
hal.structure.identifierMacDiarmid Institute for Advanced Materials and Nanotechnology
dc.contributor.authorARCHER, Rosanna
hal.structure.identifierSchool of Physical Chemical Sciences [Christchurch]
hal.structure.identifierMacDiarmid Institute for Advanced Materials and Nanotechnology
dc.contributor.authorSCOTT, Hayley
hal.structure.identifierSchool of Physical Chemical Sciences [Christchurch]
dc.contributor.authorPOLSON, Matthew
hal.structure.identifierSchool of Physical Chemical Sciences [Christchurch]
dc.contributor.authorWILLIAMSON, Bryce
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorMATHONIÈRE, Corine
hal.structure.identifierCentre de Recherche Paul Pascal [CRPP]
dc.contributor.authorROUZIÈRES, Mathieu
hal.structure.identifierCentre de Recherche Paul Pascal [CRPP]
dc.contributor.authorCLÉRAC, Rodolphe
hal.structure.identifierSchool of Physical Chemical Sciences [Christchurch]
hal.structure.identifierMacDiarmid Institute for Advanced Materials and Nanotechnology
dc.contributor.authorKRUGER, Paul
dc.date.issued2018
dc.identifier.issn1477-9226
dc.description.abstractEnDinuclear triple-helicate complexes of the formula [Fe2L3](BF4)4·solv (solv = CH3CN, CHCl3, H2O) have been synthesised and structurally characterised. The bis-bidentate ligands, L, present either strong-field 2-pyridylimine (1) or weaker-field 2-imidazolylimine (2) and 4-imidazolylimine (3) coordination spheres about Fe(II) centres in an octahedral geometry. Whereas 1 is pervasively diamagnetic, spin crossover (SCO) behaviour is observed in 2 and 3 and has been studied using variable-temperature structural, UV-visible spectroscopic, magnetic and photo-magnetic techniques. Variable-temperature (1.8–400 K) magneticsusceptibility measurements reveal the T1/2 values of 2 and 3 to be strongly dependent upon the solvent and degree of solvation. Photomagnetic studies at 10 K under white-light irradiation revealed an inefficient photo-induced SCO in 2, but full switching in 3.
dc.language.isoen
dc.publisherRoyal Society of Chemistry
dc.title.enVaried spin crossover behaviour in a family of dinuclear Fe( ii ) triple helicate complexes
dc.typeArticle de revue
dc.identifier.doi10.1039/c8dt01567h
dc.subject.halChimie/Matériaux
bordeaux.journalDalton Transactions
bordeaux.page7965 - 7974
bordeaux.volume47
bordeaux.issue24
bordeaux.peerReviewedoui
hal.identifierhal-01822500
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01822500v1
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