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Nonmagnetic ground state in the molecular material Nd2[Cu (pba)]3 -23 H2O (pba = 1,3-propylenebis( oxamato ))

hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
hal.structure.identifierLaboratoire de Chimie Inorganique
dc.contributor.authorKAHN, Olivier
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
hal.structure.identifierLaboratoire de Chimie Inorganique
dc.contributor.authorOUSHOORN, Robert
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
hal.structure.identifierLaboratoire de Chimie Inorganique
dc.contributor.authorGUILLOU, Olivier
hal.structure.identifierInstitut de Physique et Chimie des Matériaux de Strasbourg [IPCMS]
dc.contributor.authorDRILLON, Marc
hal.structure.identifierInstitut de Physique et Chimie des Matériaux de Strasbourg [IPCMS]
dc.contributor.authorRABU, Pierre
hal.structure.identifierlaboratoire de physique du Solide
dc.contributor.authorBOUBEKEUR, Kamal
hal.structure.identifierlaboratoire de physique du Solide
dc.contributor.authorBATAIL, Patrick
dc.date.issued1995
dc.identifier.issn1144-0546
dc.description.abstractEnThe crystal structure of Nd 2 [Cu{pba)b•23 H 2 O with pba= 1,3-propylenebis(oxamato) was first described two years aga. lt consists of tube-like motifs of the formula Nd 2 [Cu(pba)b{H 2 O) 9 and noncoordinated water molecules. Each Nd(III) ion is surrounded by three nearest-neighbor Cu(II) ions, and in turn each Cu(II) ion_is situated between two Nd(III) ions. The magnetic properties of the compound have been investigated. The magnetic susceptibility presents a rounded maximum around 2.5 K, and the product of the magnetic susceptibility and the temperature tends to zero as the temperature approaches absolute zero. This indicates that the ground state of the compound is quasinonmagnetic, which at a first view is quite an unexpected result. This situation is attributed to a compensation between the local magnetic moments of the two Nd(III) ions and the three Cu(III) ions at low temperature. This idea has been tested with a theoretical model in which the local Kramer's doublets for Nd(III) and Cu(II) interact antiferromagnetically. A compensation of the magnetic moments may be expected for a value of the ratio g d /9c u close to 1.73 g d and 9cu being the average values of the Zeeman factor for the ground Kramer's doublet of Nd(III) and Cu(II), respectively.
dc.language.isoen
dc.publisherRoyal Society of Chemistry
dc.title.enNonmagnetic ground state in the molecular material Nd2[Cu (pba)]3 -23 H2O (pba = 1,3-propylenebis( oxamato ))
dc.typeArticle de revue
dc.subject.halChimie/Matériaux
bordeaux.journalNew Journal of Chemistry
bordeaux.page655-660
bordeaux.volume19
bordeaux.issue5-6
bordeaux.peerReviewedoui
hal.identifierhal-04207378
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-04207378v1
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