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Slow magnetic relaxation and charge-transfer in cyano-bridged coordination clusters incorporating [Re(CN)(7)](3-/4-).

hal.structure.identifierDepartment of Chemistry [Berkeley]
dc.contributor.authorZADROZNY, Joseph M.
hal.structure.identifierDepartment of Chemistry [Berkeley]
dc.contributor.authorFREEDMAN, Danna E.
hal.structure.identifierDepartment of Chemistry [Berkeley]
hal.structure.identifierDepartment of Chemistry
dc.contributor.authorJENKINS, David M.
hal.structure.identifierDepartment of Chemistry [Berkeley]
dc.contributor.authorHARRIS, T. David
hal.structure.identifierDepartment of Chemistry [Berkeley]
dc.contributor.authorIAVARONE, Anthony T.
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorMATHONIÈRE, Corine
hal.structure.identifierUniversité Sciences et Technologies - Bordeaux 1 [UB]
hal.structure.identifierCentre de recherches Paul Pascal [CRPP]
dc.contributor.authorCLÉRAC, Rodolphe
hal.structure.identifierDepartment of Chemistry [Berkeley]
dc.contributor.authorLONG, Jeffrey R.
dc.date.issued2010-10-04
dc.identifier.issn0020-1669
dc.description.abstractEnTreatment of the cyanometalate building unit [Re(CN)(7)](3-) with [(PY5Me(2))M(MeCN)](2+) (M = Co, Ni, Cu) affords a series of pentanuclear clusters of formulas [(PY5Me(2))(4)M(4)Re(CN)(7)](5+) (M = Co, Ni, Cu) and [(PY5Me(2))(4)Cu(4)Re(CN)(7)](4+). Single crystal X-ray diffraction analyses of the clusters reveal a star-like structure in which four [(PY5Me(2))M](2+) moieties are linked to a central [Re(CN)(7)](3-) unit via bridging cyanide ligands. An intramolecular Co(II) → Re(IV) charge-transfer accompanies the formation of the Co(II)(4)Re(IV) cluster, giving a Co(II)(3)Co(III)Re(III) species. Spectroelectrochemical methods and irradiation experiments are used to characterize the metal-metal charge-transfer bands of this compound. A rhenium-based thermally induced one-electron reduction is observed for the Cu(II)(4)Re(IV) cluster to give a Cu(II)(4)Re(III) complex; however, this reduction may be forestalled at low temperature. Finally, magnetic measurements reveal intracluster ferromagnetic exchange coupling, strong uniaxial magnetic anisotropy, and slow magnetic relaxation in the Ni(II)(4)Re(IV) and Cu(II)(4)Re(IV) clusters.
dc.language.isoen
dc.publisherAmerican Chemical Society
dc.title.enSlow magnetic relaxation and charge-transfer in cyano-bridged coordination clusters incorporating [Re(CN)(7)](3-/4-).
dc.typeArticle de revue
dc.identifier.doi10.1021/ic101132z
dc.subject.halChimie/Matériaux
bordeaux.journalInorganic Chemistry
bordeaux.page8886-8896
bordeaux.volume49
bordeaux.issue19
bordeaux.peerReviewedoui
hal.identifierhal-00530398
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00530398v1
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