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Polymorphism of even saturated carboxylic acids from n-decanoic to n-eicosanoic acid

hal.structure.identifierDepartamento de Cristalografia Mioneralogia i Depositos Minerales
dc.contributor.authorMORENO-CALVO, Evelyn
hal.structure.identifierDepartamento de Cristalografia Mioneralogia i Depositos Minerales
dc.contributor.authorCORDOBILLA, Raquel
hal.structure.identifierDepartamento de Cristalografia Mioneralogia i Depositos Minerales
dc.contributor.authorCALVET, Teresa
hal.structure.identifierDepartamento de Cristalografia Mioneralogia i Depositos Minerales
dc.contributor.authorCUEVAS-DIARTE, Miquel Angel
hal.structure.identifierCentre de physique moléculaire optique et hertzienne [CPMOH]
dc.contributor.authorGBABODE, Gabin
hal.structure.identifierCentre de physique moléculaire optique et hertzienne [CPMOH]
dc.contributor.authorNÉGRIER, Philippe
hal.structure.identifierCentre de physique moléculaire optique et hertzienne [CPMOH]
dc.contributor.authorMONDIEIG, Denise
hal.structure.identifierChemical Thermodynamics Group
dc.contributor.authorOONK, Harry A. J.
dc.date.created2007-01-16
dc.date.issued2007-06
dc.identifier.issn1144-0546
dc.description.abstractEnThe nature and the mechanism of the magnetic hysteresis for the thermal spin crossover exhibited by an iron (II) compound is investigated by means of variable-temperature powder and single-crystal x-ray diffraction. The unit cell temperature dependence clearly evidences the amplitude of the strong structural rearrangement that accompanies the spin crossover - corresponding to a variation of 8.6% for one of the unit cell parameters - as well as the structural hysteresis width. In this regard, the present x-ray study reveals significant differences in the spin crossover features according to the nature of the sample - powder or single crystal - that should be taken into account in the analysis of physical properties. Concerning the interplay between structural and magnetic transitions, quenching effects show that the structural transition and the spin crossover are indissociable. Furthermore, investigations of the mechanism itself of the thermal spin crossover confirm the presence of spin-like domains in the conversion region, either in the cooling or in the warming loops. The non-dependence with temperature of these domains inside the hysteresis loop demonstrates the stability of the microscopic and macroscopic structures in the corresponding thermodynamic conditions. This result is of interest in the context of the potential use of hysteresis loops to obtain high-temperature photo-conversion.
dc.language.isoen
dc.publisherRoyal Society of Chemistry
dc.title.enPolymorphism of even saturated carboxylic acids from n-decanoic to n-eicosanoic acid
dc.typeArticle de revue
dc.identifier.doi10.1039/b700551b
dc.subject.halChimie/Cristallographie
dc.subject.halPhysique [physics]/Matière Condensée [cond-mat]
bordeaux.journalNew Journal of Chemistry
bordeaux.page947-957
bordeaux.volume31
bordeaux.issue6
bordeaux.peerReviewedoui
hal.identifierhal-01553018
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01553018v1
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