LAKHLOUFI, Sabine; LEMÉE-CAILLEAU, Marie-Hélène; CHASTANET, Guillaume; ROSA, Patrick; DARO, Nathalie; GUIONNEAU, Philippe

doi:10.1039/c6cp04987g

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LAKHLOUFI, Sabine
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

LEMÉE-CAILLEAU, Marie-Hélène
Institut Laue-Langevin [ILL]

CHASTANET, Guillaume
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

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Article de revue

Ce document a été publié dans

Physical Chemistry Chemical Physics. 2016, vol. 18, n° 40, p. 28307-28315

Royal Society of Chemistry

Résumé en anglais

The thermally induced Spin-CrossOver (SCO) undergone by the mononuclear iron(ii) complex [Fe(PM-AzA)2(NCS)2] (PM = N-2'-pyridylmethylene, AzA = 4-(phenylazo)aniline) is fully pictured by a quasi-continuous structural determination all along the spin-state modification within the sample. This large scale multi-temperature Single-Crystal X-Ray Diffraction (SCXRD) investigation leads to making structural movies. The latter reveal or confirm some features of the SCO that are subsequently validated by the same systematic investigation performed on a zinc isostructural analogue complex. Notably, the continuous views of the temperature dependencies of the unit-cell parameters, the dilatation tensors, the metal coordination sphere geometry and the intermolecular distances confirm a few of the structure-property relationships already known for SCO materials. In parallel, the examination of the temperature dependencies of the atomic coordinates and the atomic displacement parameters reveals unexpected behaviours in this gradual SCO material such as antagonistic atomic movements due to the single SCO and the pure thermal effects.< Réduire

DOI

http://dx.doi.org/10.1039/c6cp04987g

Project ANR

Etude femtoseconde rayons X et optique de la dynamique ultrarapide de photocommutation de matériaux moléculaires magnétiques

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