PITTALA, Narsimhulu; THÉTIOT, Franck; CHARLES, Catherine; TRIKI, Smail; BOUKHEDDADEN, Kamel; CHASTANET, Guillaume; MARCHIVIE, Mathieu

doi:10.1039/c7cc04112h

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PITTALA, Narsimhulu
Chimie, Electrochimie Moléculaires et Chimie Analytique [CEMCA]

THÉTIOT, Franck
Chimie, Electrochimie Moléculaires et Chimie Analytique [CEMCA]

CHARLES, Catherine
Chimie, Electrochimie Moléculaires et Chimie Analytique [CEMCA]

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Este ítem está publicado en

Chemical Communications. 2017-06-30, vol. 53, n° 59, p. 8356-8359

Royal Society of Chemistry

Resumen en inglés

We report an original triazole-based trinuclear FeII complex [Fe3(bntrz)6(tcnset)6] (1) (bntrz = 4-(benzyl)-1,2,4-triazole, tcnset- = 1,1,3,3-tetracyano-2-thioethylpropenide anion) as the first related example to date that displays a complete spin transition involving the three Fe(II) metal centers. Magnetic and heat capacity measurements, and variable temperature X-ray diffraction revealed a one-step first-order [HS-HS-HS]/[LS-LS-LS] transition above room temperature (T1/2 = 318 K) despite the presence of two chemically different metal centers in the trimer (Fe2-Fe1-Fe2). The strong ferro-elastic interactions, between the three metal centers, have been identified as the source of the concerted spin transition in this trinuclear complex< Leer menos

Palabras clave en inglés

X-ray diffraction

[Fe3(bntrz)6(tcnset)6]

spin transition

DOI

http://dx.doi.org/10.1039/c7cc04112h

Proyecto ANR

Promotion du Développement Durable par les Indications Géographiques - ANR-05-PADD-0012

Orígen

Importado de Hal

Centros de investigación

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