GROSJEAN, Arnaud; DARO, Nathalie; PECHEV, Stanislav; MOULET, Lucie; ETRILLARD, Céline; CHASTANET, Guillaume; GUIONNEAU, Philippe

doi:10.1002/ejic.201501164

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GROSJEAN, Arnaud
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

DARO, Nathalie
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

PECHEV, Stanislav
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

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Article de revue

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European Journal of Inorganic Chemistry. 2016 n° 13-14, p. 1961-1966

Wiley-VCH Verlag

Resumen en inglés

The coherent-domain morphology was determined for a crystalline powder of the 1D polymeric spin-crossover [Fe(Htrz)2(trz)](BF4) {Htrz = 1H-1,2,4-triazole, trz = deprotonated triazolato(–) ligand} compound. This morphology is in adequacy with the crystal packing and proved that the long axis of the domain corresponds to the iron–triazole chains axis, which gives information on the crystal-growth process. Furthermore, thermal cycling clearly demonstrated that the coherent-domain length strongly and continuously decreased as a function of the number of spin-crossover cycles undergone. The degradation in the crystalline quality corresponds to a break in the [Fe(Htrz)2(trz)]+ chains. This structural fatigability was confirmed by similar observations on a close spin-crossover compound, [Fe(NH2trz)3](NO3)2·H2O, showing that a few hundreds of thermal spin-crossover cycles could destroy the crystalline aspect of the sample.< Leer menos

Palabras clave en inglés

Spin crossover

Microstructures

Iron

Nitrogen heterocycles

DOI

http://dx.doi.org/10.1002/ejic.201501164

Proyecto ANR

Éléments de mémoires multifonctionnels utilisant des connections supramoléculaires auto assemblées - ANR-11-BS08-0006

Orígen

Importado de Hal

Centros de investigación

Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB) - UMR 5026